Richie Ryan breaks into Duncan MacLeod and Tessa Noel's antique store, but his robbery is interrupted by the dramatic entrance of Immortals Slan Quince (Richard Moll) and Connor MacLeod. Witnessing them, Tessa realizes to her dismay that Duncan can be challenged and beheaded at any time. Duncan, knowing that he cannot flee the Game, expects her to leave him for her own safety. After Duncan saves Tessa from Quince, Connor fights Quince on a bridge but falls over the railing. Duncan beheads Quince and leaves the town. Connor advises Duncan to watch Richie and tells Tessa where Duncan is. Accepting the danger, Tessa reunites with Duncan.

Richie, now living with MacLeod and Tessa, tries to find his parents. MacLeod remembers that he was banished from his village in 1622 after suffering a deadly battle wound and awakening as an Immortal; his father had told him he was an orphan. Con man Joe Scanlon (J.E. Freeman) tells Richie he is his father. Richie half believes it and develops a close relationship with Scanlon until Scanlon steals a priceless pre-Columbian mask to repay his gambling debts. After MacLeod saves Scanlon and retrieves the mask, Richie helps Scanlon to disappear.

Immortal Lucas Desiree (Victor A. Young), an old friend of MacLeod, is beheaded by Sheriff Howard Crowley (John Novak), who frames homeless Vietnam war veteran Leo Atkins (Vincent Schiavelli) for the crime. When MacLeod comes to town to investigate the death, he realizes Leo is innocent and, with Richie's help, saves Leo from being lynched by the townspeople. MacLeod then fights and beheads Crowley.

Richie's friend Gary dies in a bank robbery. When MacLeod and Richie see his body at the hospital, they notice strange marks on Gary's forehead. MacLeod remembers those marks are an after-effect of the potion made by his immortal friend Kiem Sun (Soon-Tek Oh), which gives people enormous strength and makes them ignore pain. Kiem Sun tells MacLeod his potion has been stolen by his student Chou Lin (Dustin Nguyen). MacLeod finds Chou Lin and destroys the potion, which makes Kiem Sun so angry that he fights MacLeod. MacLeod defeats him and spares him.

MacLeod, Tessa and Richie are taken hostage in a court building by assassin Bryan Slade (Andrew Divoff). Duncan is knocked out. Slade kills MacLeod to blackmail the SWAT commando outside into giving them a helicopter to flee. While Tessa does her best to keep the hostages alive and Randi McFarland reports the event live outside, MacLeod revives and subdues Slade's men one by one. MacLeod finally kills Slade.

Immortal Felicia Martins (Joan Jett) is pursued by Immortal Devereux (Eli Gabay), whose wife and baby she had killed a century ago. In the present, she seduces Richie to obtain shelter and fencing lessons from MacLeod, pretending she is a young, newborn Immortal. Devereux finds Martins and she beheads him. Meanwhile, MacLeod discovers that a Coronelli map Martins has faked is two hundred years old. MacLeod fights Martins and spares her life.

MacLeod is hit by a car and brought to the hospital. When Dr. Wilder (Joe Pantoliano) realizes that MacLeod walked out by himself, he captures him and locks him in his basement to find out why. MacLeod escapes but is so confused by the drugs Wilder gave him that he cannot remember the location of Wilder's house. Wilder kidnaps Randi McFarland, who was investigating MacLeod's disappearance. With Tessa's help, MacLeod finds Wilder's place and saves Randi. Wilder accidentally sets fire to his basement while fighting MacLeod and dies.

While photographing old petroglyphs in the mountains, Tessa is abducted by mountain men led by Immortal Caleb Cole (Marc Singer), who wants to marry her. MacLeod pursues them but must throw himself into a crevasse to escape Cole's henchmen. They bring MacLeod's sword back to their camp and Cole realizes MacLeod is Immortal when he sees it. Tessa instigates infighting among the kidnappers, buying MacLeod time to find her. MacLeod then fights and beheads Cole.

In 1988, Immortal Walter Reinhardt (Christoph M. Ohrt) disappeared after losing a fight against MacLeod. In the present, Reinhardt's former lover Rebecca (Vanity) recognizes Reinhardt's sword in MacLeod's antique shop and begins stalking MacLeod. Reinhardt, who is still alive, manipulates Rebecca in order to make her believe that MacLeod has killed him, and kidnaps Richie to draw MacLeod into a fight. MacLeod beheads Reinhardt.

A meeting between Richie's friend Nikki (Johannah Newmarch), her boyfriend and two drug dealers ends in a shooting and Nikki secretly keeps both the drugs and the money. MacLeod foils several attempts by the dealers to retrieve the stolen goods and discovers that their leader is Immortal Alexei Voshin (Stephen Macht), who had betrayed MacLeod in 1938. When Voshin discovers that MacLeod has destroyed the drug and protects Nikki, he challenges him. MacLeod fights Voshin, who is beheaded by his ship's propeller.

Tessa witnesses the murder of artist Anne Wheeler (Diana Barrington) but police refuse to investigate because they found no body. Investigating the murder on their own, Tessa and MacLeod are targeted by the murderer, who MacLeod realizes is Immortal. Later, police discover Wheeler's body and put Tessa under protection, but a bomb is planted at the safe house and MacLeod saves Tessa from the explosion. MacLeod discovers that the murderer is Chief of Police Andrew Ballin (Tom Butler) fights him and beheads him.

Tessa's friend Natalie (Moira Walley) is attacked by serial killer "the Scalper" (Dee McCafferty). MacLeod realizes the Scalper is imitating Immortal Marcus Korolus (J. G. Hertzler), who used to kill blonde women in 1925 until MacLeod beheaded him. MacLeod is the only one apart from the Scalper to know that Korolus used the Orpheum Theater as a base. MacLeod sets up a trap in which Tessa acts as bait, but the Scalper foils their plan by attacking another woman. Tessa hits him with MacLeod's Thunderbird to stop him.

Immortal Grayson (James Horan) is killing the protegees of his former teacher Darius (Werner Stocker) to make him leave Holy Ground and fight him. Darius asks MacLeod to protect his mortal student Victor Paulus (Earl Pastko) from Grayson, so MacLeod saves Paulus' life twice and meets Grayson. Realizing Grayson will not give up, MacLeod fights and beheads him. MacLeod then joins Tessa and Richie in Paris and they settle on a barge near Notre Dame.

Immortal Kuyler (Peter Howitt) makes his victims laugh so that they drop their guard and he can kill them. MacLeod, having seen Kuyler kill Baron Deschields in 1783, recognizes Kuyler's modus operandi when an old man is killed in a nearby cafe. MacLeod remembers how Kuyler caught him without his sword in 1980, resulting in MacLeod fleeing on a Bateau Mouche and meeting Tessa for the first time. MacLeod, knowing Kuyler's taste for absinthe, tracks him down, then fights and beheads him.

Immortal Xavier St. Cloud (Roland Gift) robs a jewellery using poison gas then confesses it to Darius to provoke him. Darius refuses to violate the privacy of the confession for Inspector LeBrun (Hugues Leforestier) and does not tell him about Xavier. When LeBrun mentions the gas, MacLeod remembers Xavier. In the meantime, Xavier lends an African sculpture to the exhibition Tessa is organizing and plants a bomb inside. During the opening party of the exhibition, MacLeod realizes where the sculpture comes from, discovers the bomb and disarms it. MacLeod then fights Xavier and severs his left hand, but Xavier escapes.

Ursa (Christian Van Acker), a mentally deficient Immortal living under the Opera de Paris, loves singer Carolyn Lamb (Dee Dee Bridgewater); taking advantage of this, Carolyn makes Ursa kidnap backing vocalist Jenny out of jealousy of her talent. MacLeod sets out in the catacombs of Paris, finds Ursa's hiding place, and frees Jenny. After MacLeod discovers that Ursa was manipulated by Carolyn, Carolyn provokes Ursa by telling him that MacLeod tried to kill her. Furious, Ursa fights MacLeod on the roof of the Opera, falls over the edge and dies. When Carolyn sees Ursa revive, she flees in terror and is hit by a car.

Grace Chandel (Julia Stemberger) has been stalked by fellow Immortal Carlo Sendaro (Georges Corraface) ever since she left him decades ago. MacLeod, who had a romantic relationship with Grace in 1660, protects her; while Tessa is jealous of Grace at first, she soon befriends her. Sendaro refuses to accept that Grace does not love him anymore and kidnaps her. MacLeod frees Grace and fights Sendaro in the Paris Metro, where Sendaro is beheaded by a train.

Amanda (Elizabeth Gracen) brings MacLeod to fellow Immortal Zachary Blaine (Jason Isaacs) in exchange for her life. Blaine attacks MacLeod but their fight is interrupted, so Blaine threatens to take Amanda's head instead. Amanda dissuades him by telling him of a priceless manuscript and offering him to assist her in stealing it. Meanwhile, MacLeod realizes Amanda and Blaine know each other, follows them and foils their robbery attempt. Blaine fights MacLeod but is beheaded by Amanda.

Alfred Cahill (Martin Kemp) is stabbed by a prostitute, dies and awakes Immortal. Made insane by the shock of becoming Immortal, Cahill believes he has become God's avenging angel and starts killing prostitutes and people around them, including a client and the pimp of Tessa's friend Elaine Trent (Sandra Nelson). After Cahill threatens Tessa, MacLeod fights and beheads him.

Immortal Gabriel Piton (Nigel Terry) kills his lover Cynthia (Rachel Palmieri) and replaces her with top model Myia (Katia Douvalian). Richie meets Myia in a cafe and falls in love with her. Richie is jealous of Piton and, after hearing about Cynthia's death, suspects that Piton killed her and investigates Piton's flat. Interrupted by Piton, Richie escapes, but Piton is suspicious and sends Richie to prison in retaliation. MacLeod decides to intervene and finds Piton about to kill Myia. MacLeod fights Piton and beheads him.

Mark Rothwood (Jason Riddington) rapes Lori Bellian (Marion Cotillard) while MacLeod, Tessa and Richie are visiting Mark's father Alan (Anthony Head). Lori's father, Immortal Everett Bellian (Peter Guinness) learns of the rape and reacts by besieging Rothwood's chateau with his mercenaries. MacLeod leads the defence of the chateau and foils their attack, but when Alan Rothwood goes out with his son to talk to Bellian, he is shot by one of Bellian's men. MacLeod fights Bellian, but they are interrupted by Mark, who is killed by Lori.

MacLeod and his friend, Immortal Hugh Fitzcairn (Roger Daltrey), find Darius beheaded in his chapel. They investigate his death, but the murderers kidnap Fitzcairn. MacLeod discovers that they are mortals called the Hunters and that they have a particular tattoo on their wrists. MacLeod finds a dilapidated old book in Darius' rectory and narrowly escapes capture, before following a Hunter to their headquarters. Their leader, James Horton (Peter Hudson), is about to guillotine Fitzcairn and manages to escape during the ensuing fight. MacLeod frees Fitzcairn and together with Tessa and Richie they disperse Darius' ashes in the Seine River.

MacLeod, Tessa and Richie settle back into the antique shop in the United States. Following a clue written by Darius on the Fifth Chronicle, MacLeod finds Horton's bookshop and meets Dawson, Horton's daughter Lynn (Kehli O'Byrne) and her fiance Robert (Cameron Bancroft). Dawson explains all about the Watchers to MacLeod, who follows Dawson to find Horton. When Robert considers leaving the Hunters because MacLeod spared his life, Horton kills Robert. Accompanied by Dawson and Lynn, MacLeod confronts Horton, who admits to killing Darius and Robert. MacLeod stabs Horton but Horton shoots him dead. When MacLeod revives, Dawson, Horton and Lynn have disappeared.

MacLeod, Tessa and Richie visit the photograph exhibition of MacLeod's friend Gregor Powers (Joel Wyner). There MacLeod meets Linda Plager (Sheila Moore), who was his lover in 1938 and is now an old, frail lady. While MacLeod ponders whether he will tell Linda about his immortality, Powers nearly kills Richie trying to make Richie show some fear of death. MacLeod realizes Powers has seen too many people die and is now desperate and nihilistic. MacLeod pretends to behead him to make him feel fear again. Later, MacLeod reveals his immortality to Linda as she lies dying.

Immortal Michael Moore (Geraint Wyn Davies) visits MacLeod for help because Moore's nemesis Quenten Barnes has reappeared. MacLeod helps Moore to track Barnes, but nobody, including Moore, realizes that Barnes is actually Moore's alternate, evil personality. Tessa attracts Barnes's interest, and he nearly strangles her before MacLeod intervenes. MacLeod and Moore eventually realize the truth, and as Moore begs MacLeod to kill him so that Barnes dies, MacLeod beheads Moore.

MacLeod and Tessa spend the evening in a gypsy cafe where small-time psychic Greta (Traci Lords) tells Tessa to leave the city because she is in danger. Then Tessa is kidnapped by Pallin Wolf (Andrew Jackson), a Hunter who uses mortals as a bait to kill Immortals in a dark room using night vision goggles. MacLeod enlists Greta's help and finally locates Wolf's house. MacLeod kills Wolf and frees Tessa with Richie and tells them to go out while he searches Wolf's house; there Tessa and Richie are shot dead by a drug addict mugging for money. While Richie revives, becoming Immortal, Tessa dies. MacLeod is devastated and asks Ritchie to sell everything; leaving the antique shop, car and his former life behind.

MacLeod buys Charlie DeSalvo's dojo to live in and asks Charlie to run it for him. Richie attracts the ire of Immortal Annie Devlin (Sheena Easton) by foiling her attempt at a terror attack against the British Consulate. MacLeod trains Richie at swordsmanship and tries to convince Devlin not to fight Richie, but fails. Richie eventually wins his fight against Devlin, but is unable to behead her. MacLeod presents Richie with a Spanish rapier.

Dawson asks MacLeod to see if Canaan (Santino Buda), the leader of the derelict neighbourhood called the Zone, is an Immortal. MacLeod enters the Zone with Charlie, who has grown up there. MacLeod realizes Canaan is mortal and decides to end his rule. MacLeod and Charlie gather the inhabitants of the Zone, but Canaan comes to the meeting with his men. MacLeod and Charlie fight them and stop Canaan.

In 1936 in Berlin, Germany, Amanda steals money plates while MacLeod tries to smuggle scientist Lev Arkin (Michael Puttonen) to England. When MacLeod's contact Werner (Robert Wisden) betrays him, MacLeod has no choice but to trust Amanda to fly Arkin away while he escapes on road. In the present, Amanda is wanted by the FBI. MacLeod quickly figures out that Amanda wants to counterfeit money with the old plates, but so does Special Agent Palance (Don S. Davis), who blackmails them into giving him the plates before shooting them dead. MacLeod and Amanda revive shortly after, and Palance is arrested thanks to Richie who has filmed the whole scene.

Charlie's young friend Jimmy Song (Dustin Nguyen) films a kung fu movie in the dojo. As a stuntman is poisoned and the set is vandalized, it becomes clear that someone wants to stop the production. MacLeod reluctantly agrees to protect the young, arrogant star. MacLeod discovers Jimmy used to work for underground boss Johnny Leong (Robert Ito) and revealed Leong's gang activities in the movie script. Jimmy decides to kill Leong himself, but he is overpowered by Leong's men. MacLeod fights them and frees Jimmy.

In 1926, MacLeod saved Immortal Carl Robinson from white supremacist lynchers in Louisiana. In the present, Robinson is chased by racist policeman Carter (Geza Kovacs) who turns out to be a Hunter determined to kill him. MacLeod helps Robinson overcome his hate against racists and ambush Carter. Robinson then resumes his baseball career and plans to become a politician.

MacLeod is challenged by Immortal Anthony Gallen (Roddy Piper), but their fight is interrupted by Tommy Bannen, who is killed by Gallen. MacLeod meets Tommy's mother (Jan D'Arcy) at the funeral and, touched by her grief, investigates Tommy's employers Mike Honniger (Ken Camroux) and his daughter Suzanne (Andrea Roth). MacLeod discovers that Tommy had been hired by Mike to kill Gallen. Gallen and his lover Suzanne want to take over Mike's company; they kill Mike, then Gallen kills Suzanne and fights MacLeod, who beheads him.

In 1891, Tommy Sullivan (Bruce Weitz) talked MacLeod into a prizefight against the local boxing champion, which MacLeod won, despite the intervention of the police. Sullivan then killed promoter Wilson (Russell Roberts) to recover the one thousand dollars of the prize. In the present, Sullivan is training George Belcher (Wren Robertz) and trying to go out with Iris (Cali Timmins), a maid at the bar owned by promoter Frank Coleman (Tom McBeath). Sullivan kills Coleman when he tries to buy George, then he kills George for betraying him. MacLeod decides that his friend has gone too far, challenges him and beheads him.

Richie saves Laura Daniels (Deanna Milligan) from bounty hunter Mako (Jonathan Banks). MacLeod remembers how Mako had killed his friend Tim Ramsey (Lochlyn Munro) in 1882 because he put the letter before the spirit of the law. Mako will not let Lauren go for she has accidentally killed her violent husband, so Richie ignores MacLeod's advice and flees with Lauren. Mako chases them and hits Lauren with his car, killing her. An infuriated Richie fights Mako and beheads him. MacLeod tells Richie to leave the town.

While camping in the mountains, MacLeod and Charlie meet Sara Lightfoot (Michelle Thrush) and baby Jamie, who are fleeing the Hoskins family. MacLeod and Charlie help Sara escape across the mountains, but MacLeod's growing suspicions that Sara is not the mother of Jamie are eventually confirmed. While MacLeod goes to talk to Avery Hoskins (Ed Lauter), who agrees to end the feud peacefully, Avery's brother Billy (Jon Cuthbert) drops to the rocky edge where Charlie, Sara and Jamie are hiding and falls to his death. Sara agrees to give Jamie back to his father.

Xavier St. Cloud employs mercenaries to behead fellow Immortals. Dawson warns MacLeod and MacLeod and Charlie barely escape Xavier's attack unscathed. MacLeod meets CID Special Agent Renee Delaney, who is investigating Xavier. Despite MacLeod's warnings, Charlie insists on following him. MacLeod punches Charlie so that he does not witness MacLeod's fight with Xavier, but Charlie sees Horton shoot MacLeod in the chest, before getting shot himself. Horton and his Hunters turn out to be Xavier's associates. MacLeod breaks into the Dawson family crypt to find Horton's grave empty and is infuriated to find that Dawson knew that Horton was alive.

Charlie is slowly recovering and demands to know how MacLeod could survive several shots in the chest, which MacLeod says is magic. MacLeod is followed by Special Agent Delaney on his way to Paris, where Xavier and Horton have fled. After Delaney is shot in the arm by one of Horton's men, Dawson finally shoots Horton. MacLeod uses his new neighbour Maurice's help to find Xavier's address, fights Xavier and beheads him. As MacLeod and Delaney kiss goodbye, Horton watches them in the background.

In 1840, MacLeod was doing business in Paris with merchantmen Henry Jacom (Trevor Peacock) and William Stillwell (Peter Vizard). Stillwell is seemingly killed by a vampire. MacLeod realizes Immortal Nicholas Ward (Jeremy Brudenell) is Juliette Jacom's (Tonya Kinzinger) fiance. After the vampire kills Henry Jacom and vampire hunter Alan Baines (Denis Lill), MacLeod challenges Ward, but their fight is interrupted. In the present, MacLeod's friend Helene Piper (Nathalie Presles), who is Ward's lover, mourns her father, and as her producer Peter Wells (Jack Galloway) is killed too, MacLeod recognizes Ward's modus operandi. He challenges Ward and beheads him.

Immortal Arthur Drake (Peter Firth) kills President Chescu (Andre Oumansky). MacLeod prevents Eli Jarmel (Tom Watson) from killing Drake, who killed Eli's family years ago. Eli is gravely wounded in his second attempt at killing Drake, but MacLeod refuses to intervene because he has promised not to fight Drake in 1919 after Drake let his lover Katerina (Anna Miasedova) and her family live. Before dying, Eli says MacLeod's keeping his word is only vanity. MacLeod changes his mind, fights Drake and beheads him.

Luther (Emile Abossolo M'Bo) beheads fellow Immortal Rebecca Horne (Nadia Cameron), his and Amanda's teacher. Amanda comes to MacLeod for help and they find out that Luther gathers the crystal parts that Rebecca gave each of her students, with the belief that the whole crystal will make him invincible. Amanda challenges Luther to avenge Rebecca's death. Luther is about to behead Amanda when MacLeod stops him by producing the crystal he has taken from Luther's men. Luther renounces to behead Amanda and fights MacLeod instead. MacLeod beheads him and gives the crystal to Amanda.

Richie joins MacLeod in Paris because he is being chased by Immortal Martin Hyde (Michael Siberry), who wants MacLeod's head. MacLeod remembers how Hyde had hunted him the same way to find Connor MacLeod in 1630. As Hyde frames Richie for the murders he has committed himself, MacLeod realizes he cannot behead Hyde right now if he wants Richie to get out of jail. MacLeod tricks Hyde into confessing the murders when police is listening, resulting in Hyde faking his own death by falling off a roof. With Richie now free, MacLeod fights Hyde and beheads him.

MacLeod frees fellow Immortal Nefertiri (Nia Peeples) from her sarcophagus where she has spent 2,000 years. They are followed by Immortal Marcus Constantine (James Faulkner), who had been Nefertiri's lover in 30 BC, before Nefertiri committed suicide because Rome had conquered Egypt. Defiant at first, MacLeod realizes that Constantine is genuinely prepared to make peace with Nefertiri; but Nefertiri never forgave Constantine for conquering Egypt and kills Constantine's wife Angela (Diana Bellego). Constantine refuses to defend himself when she challenges him, so MacLeod fights and beheads her.

Horton sets up an elaborate trap to kill MacLeod. Horton uses Pete Wilder (Martin Cummins) to befriend Richie and make MacLeod suspicious, spreading discord between them. In the meanwhile he has murderer Lisa Halle (Meilani Paul) kidnapped and her appearance modified through plastic surgery to make her look like Tessa. Horton's men follow Pete to MacLeod's barge and kill him under MacLeod's and Richie's eyes.

Horton uses Lisa (now played by Alexandra Vandernoot) as bait to trap MacLeod. MacLeod meets Lisa at Pete's burial and half believes he has found Tessa again, missing her as much as he does. While he is eagerly pursuing a relationship with her, Richie and Dawson express concern about his behaviour as well as at the fact that Horton might have resurfaced. MacLeod accepts the truth when he discovers a scar on Lisa's jaw. MacLeod confronts Lisa at the cemetery, and Horton kills her on Tessa's grave. MacLeod kills Horton, leaving Paris with Richie.

After Midori Koto sees her husband, rich industrialist Michael Kent, murder her lover, she kills Kent and runs to MacLeod for protection. She reminds MacLeod of a vow of protection his ancestor (actually MacLeod himself) made to her family over 200 years before. Flashbacks tell the story of MacLeod coming to the aid of the samurai Hideo Koto after MacLeod is shipwrecked in Japan. Hideo befriends MacLeod - even though the penalty for helping a barbarian in isolationist Japan is death. When Hideo is forced to commit seppuku (ritual suicide) by his feudal overlord for that crime, MacLeod serves as his second. He vows to Hideo he will always protect the Koto family and is bequeathed the dragon head katana sword he uses to this day. Back in the present, MacLeod discovers that Kent is an Immortal and he's still alive. In order not to further dishonour her family's name, Midori returns to Kent. Kent challenges MacLeod, who fulfils his vow to the Koto family and frees Midori from her loveless marriage.

Donna, a girl Richie dated briefly several years ago, returns with her 18-month-old son – who she claims is Richie's! While MacLeod reminds him that it's impossible, that Immortals are unable to have children, Richie sees this as an opportunity to have the family he never had and never will be able to again. When Kern, an evil Immortal, rides into town, MacLeod is reminded of his own foster son, Kahani. Kahani and his Sioux Indian mother, Little Deer, were massacred over a hundred years ago by U.S. soldiers led by Kern, then a mercenary scout. MacLeod is eager to even the score. When Donna finds Richie's rapier and demands to know what it's for, Richie is at a loss to tell her. MacLeod advises Richie that it would be safer and kinder to Donna and the baby to leave them. When his new-found family is threatened by Kern, Richie realizes MacLeod is right. While MacLeod rids the world of the evil Kern, Richie lets go of the only family he'll ever have.

The people of a tiny Balkan nation are rising up in arms against an oppressive dictator. The freedom fighters are led by Paul Karros, a vibrant, charismatic leader. Karros is an Immortal who once served as a slave under Roman oppression and fought his way to freedom with Spartacus. Since that time, whenever the common people have been fighting against oppression, Karros has been at their side. Karros and his assistant, Mara, have come to the U.S. to drum up support for their cause. MacLeod and Karros fought together in the Mexican Revolution and Karros tries to convince MacLeod to fight with him in this just cause. MacLeod turns him down, but Charlie is tempted both by the cause and by Mara. When Father Stefan, a local liaison, is critically wounded in an assassination attempt, MacLeod realizes that Karros is determined to fight the war at any cost - even at the cost of sabotaging peace negotiations by killing those who trust him. When Mara discovers the truth, she threatens to expose him. Karros responds by attempting to kill her. MacLeod is forced to challenge and defeat his old comrade. When Mara returns home to the Balkans, Charlie goes with her to help the people rebuild.

Dawson has a new girlfriend, art historian Lauren Gale, and a new attitude on life. Unfortunately, Dawson arrives at Lauren's house one evening to witness her murder. We discover the murderer is Armand Thorne, benefactor of the Thorne Museum of Antiquities, who was being investigated by Lauren. MacLeod finds an ancient gold cross on display in Thorne's museum, a cross that had been stolen out from under his protection nearly two hundred years before. Armand Thorne, MacLeod discovers, is actually John Durgan, the Immortal trapper who murdered a frontier priest and stole the cross. MacLeod persuades Amanda to come out of cat-burglar retirement and help him to steal the cross from the museum in order to lure Thorne out of his heavily protected fortress. MacLeod confronts Thorne, taking his head, and finally gets fulfil his promise to return the Cross of St. Antoine.

Michelle Webster, the rebellious teenage daughter of a friend of MacLeod's, drives away from her parents' house in a rage and right over a cliff. Trauma surgeon Anne Lindsey tries her best to save Michelle, but it's too late. MacLeod rushes to the hospital to comfort his grieving friends - and sneak their newly Immortal daughter out of the morgue. He tries to train her in the arts of Immortality, but Michelle just wants to have fun. She meets Immortal Axel Whittaker who promises her all the fun and adventure she could imagine if she stays with him. In flashback, we see that Axel uses beautiful new Immortal women as bait to trap other Immortals and take their heads - MacLeod barely escaped with his in 1896 Boston. Axel uses Michelle to lure MacLeod to his yacht, where they continue the battle they started a hundred years before. MacLeod defeats Axel. Michelle, witnessing the fearsome power of the Quickening, agrees to be trained as an Immortal under the protection of Amanda.

Brian Cullen, an old friend of MacLeod's, is burnt out from centuries of playing The Game and has turned to drugs and alcohol to get the courage to keep on playing. Cullen had a run-in with Richie and now he's coming for Richie's head. While playing chicken with Richie on a mountain road, Cullen crashes head-on into a bus full of passengers, killing many. MacLeod tries to convince Cullen, who he once knew as the greatest of the warriors, to stop using the drugs, but a paranoid Cullen believes MacLeod is just trying to render him helpless. Finally, MacLeod has no choice but to confront his former comrade and defeat him.

What happens to a kid who hits Immortality before he hits puberty? MacLeod and Richie take in 10-year-old Kenny, who asks for their protection after the fatherly Immortal who was protecting him is beheaded. Kenny, we discover, is not the sweet little lamb he appears to be. He has been Immortal for nearly 800 years, and has survived all that time by convincing other Immortals to take him in and protect him - and then taking their heads. Kenny tries to get MacLeod, but he is continuously thwarted by the presence of Anne. Kenny attempts to get Anne out of his way, but MacLeod, realizing the truth about Kenny, manages to rescue her. He goes after Kenny to stop him from killing again, but Kenny manages to escape by blending in with a group of innocent children.

Immortal David Keogh, once an indentured servant, is a noted craftsman with his heart set on marrying his sweetheart, Jill. Unfortunately, Jill does not agree. Although she loved Keogh once, she was unable to handle it when he confided the secret of his Immortality. Now Keogh won't leave her alone and she's coming to MacLeod, whom Keogh respects and might listen to, for help. But Keogh won't listen, convinced that Jill needs him as much as he needs her. In flashback, we see a time in MacLeod's life when he, too, was obsessed with a woman he couldn't have. When Jill is killed in a tragic accident while trying to get way from Keogh, Keogh blames MacLeod and swears vengeance.

MacLeod is tormented by visions of his own death, beheaded by a mysterious dark-hooded figure. Anne tries to convince him to seek medical help, but instead he turns to his old friend Garrick, who has spent centuries studying the mind. MacLeod saw Garrick in the 17th Century, when MacLeod barely escaped being burned as a witch. What MacLeod didn't know was that Garrick was not able to escape as well. Garrick convinces MacLeod that the dark-hooded figure is a racial memory that haunts all Immortals and that the way to defeat it is to not fight it, to accept it for what it is. When MacLeod, haggard and exhausted, faces the spectre for the last time, puts down his sword and refuses to fight it, the figure goes for MacLeod's head - until at the last moment MacLeod realizes the figure is Garrick, seeking his revenge after all these years. In the Tag, Anne, frustrated that MacLeod won't open up to her despite their intimate relationship, leaves him.

Lawyer Robert Waverly is leaving his mistress' apartment with his video camera when he sees MacLeod locked in combat with an evil Immortal. Waverly gets it all on tape - the fight, the beheading, the Quickening. He later tries to cut a deal with MacLeod: if MacLeod kills Waverly's wife, then Waverly won't go to the police. When Kurlow, partner of the Immortal MacLeod killed on the tape, comes after MacLeod, Waverly, unaware of what he's dealing with, proposes another deal. A la Strangers on a Train, Waverly will kill Kurlow and MacLeod will kill his wife, and no one will suspect a thing. Waverly challenges Kurlow, who kills Waverly easily and MacLeod is left to save Waverly's wife and get rid of Kurlow.

To save his own hide, petty hoodlum Benny Carbassa turns MacLeod over to an aging gangster determined to see MacLeod dead before he dies. In the midst of this, Anne returns, having convinced herself that MacLeod will open up in his own time and determined not to push him too hard. In flashback, we see MacLeod's first meeting with Benny, in 1938 at the Coconut Lounge, a club operated by two young brothers who are rivals for the same torch singer.

Recent Immortal Michael Christian has been on an incredible string of luck, taking a number of heads from unarmed and vulnerable opponents, including May-Ling Shen, who taught MacLeod the martial arts in 1780's Mongolia. Christian's Watcher, Rita Luce, has been doing more than just watching, supplying Christian with classified information on the other Immortals and their weaknesses. MacLeod, unaware of Christian, goes on a vision quest to his cabin on Holy Ground – deliberately leaving his sword behind. The race is on for Joe Dawson to figure out Rita's secret before Christian sets his sights on MacLeod.

When a religious leader, John Kirin, dies on Anne's operating table and then returns from the dead, his believers know a miracle has occurred. MacLeod knows better. He watched as Kirin, then known as Kage, massacred POWs in the Spanish Civil War and left a band of Cambodian refugee children to die at the hands of the Khmer Rouge. Kirin swears that experience changed him forever, turning him from a man of war to a man of peace. When a tabloid reporter trying to get the goods on Kirin winds up dead in MacLeod's dojo, MacLeod is certain Kirin is responsible. Kirin protests his innocence and realizes the real killer is Matthew, one of his faithful disciples trying to protect him. Kirin confronts a disillusioned Matthew, who manages to kill Kirin before dying himself in a rain of police bullets. In the Tag, Kirin and MacLeod have made peace as Kirin takes to the road, hoping to do good elsewhere.

In the 17th century, MacLeod sought refuge for a time in a monastery founded by Paul, another Immortal. There he encountered Kalas, an Immortal monk with a heavenly singing voice. When MacLeod discovered that Kalas was routinely taking the heads of Immortals as they left the sanctuary, MacLeod and Paul expelled Kalas from the monastery, separating him from the music that was his life. Now in the present, Paul and his choir have been lured out of their monastery for a concert tour. When Paul disappears after a concert, MacLeod discovers that Kalas is after his revenge. Meanwhile, two mysterious deaths at the hospital seem to be linked to negligence on Anne's part. Later, when drugs are found in Joe's bar, it becomes obvious that Kalas is trying to destroy MacLeod's friends before coming for him. MacLeod confronts Kalas and finds that Kalas is a strong and skilful fighter, better than MacLeod has faced before, and is nearly the victor. To save himself, MacLeod throws himself off the concert hall catwalk, landing, dead, near Anne on the seats below. Kalas escapes and MacLeod is forced to leave his life in the U.S. and flee to France, leaving Anne believing that he is dead.

MacLeod is picked up at the airport in France by his old friend, Hugh Fitzcairn. For the first time in the 350 years MacLeod has known him, Fitz has settled down as a Professor to the École de Cuisine et de Patisserie Le Cordon Bleu, with the love of his life, Naomi. Flashbacks show MacLeod and Fitz's first meeting, when MacLeod was protecting the Doge's daughter from Fitz's amorous advances in Verona, 1637. When Naomi's jealous ex-lover is found strangled next to a computer displaying Fitz's falsified teaching credentials, Fitz goes on the run from the police. MacLeod realizes that Fitz is being framed by Kalas, who has followed him from the U.S. Kalas challenges Fitz and takes his head while MacLeod watches, unable to interfere.

When two Watchers end up dead by Kalas' hand, Joe realizes that Kalas is looking for Methos, the mythical oldest Immortal. MacLeod knows that, with Methos' Quickening, Kalas would finally be strong enough to defeat him. Kalas and MacLeod race to be the first to find Methos. Meanwhile, Richie muscles his way onto a top level motorcycle racing team and the champion, Basil, starts to get nervous. Flashbacks are to Paris in the 1920s, when Kalas, then known as Antonio Neri, was the toast of the opera world. When Kalas threatens a young girl in MacLeod's protection, they fight. Kalas escapes, but not before MacLeod inflicts a throat wound that destroys Kalas' vocal cords and the singing that has been his life since the Middle Ages. Kalas nearly takes Methos in battle, so Methos, realizing that he will not be able to defeat Kalas, offers his own head to MacLeod. MacLeod refuses and challenges Kalas on his own, nearly defeating him before the police arrive to arrest Kalas for the deaths of the Watchers.

When Immortal Ceirdwyn and her mortal husband are gunned down by a street gang, she calls upon her skills as an ancient Celtic warrior to exact her revenge on the members of the gang, one by one. At the racetrack watching Richie's success at racing, MacLeod befriends a young pickpocket, Paolo, the brother of one of the gang members, and learns of the killings. MacLeod, who has known Ceirdwyn/Flora MacDonald since before they helped smuggle Bonnie Prince Charlie out of Scotland in 1746, feels he must stop Ceirdwyn and make her see that revenge is not the answer - a lesson she helped MacLeod learn in the bloody aftermath of Culloden. In return, Ceirdwyn helps MacLeod see that, although loving a mortal can be dangerous for the mortal, it is the mortal who must choose whether to take the risk. MacLeod calls Anne. Meanwhile, Richie dies in a fiery crash during a race, a crash that also takes the life of the champion, Basil.

MacLeod decides to tell Anne the truth about his Immortality and she flies to Paris to be with him. En route, Anne helps save the life of a young woman, Tasha, who turns out to be smuggling drugs for the Russian Mafia. Tasha is the lover of Kristov, the head of the Russian gang and formerly the leader of the band of Cossacks MacLeod encountered on his way to the Orient in 1750. Concerned about Tasha, Anne tries to convince her to testify against Kristov, while Kristov is determined to make sure Tasha dies before she can testify. Richie is kidnapped by Kristov as a pawn in this game. MacLeod must choose between taking down Kristov or saving Richie and Richie finds he must grow as an Immortal - or die.

Father Bernard has a secret he thought he'd buried 50 years ago at the bottom of the Seine. When Ernest Daimler, the Nazi Major who Bernard killed as a young boy and threw in the river just as he came back to life, appears at his church looking not a day older than the day he died, Father Bernard realizes he's like MacLeod. As a child, Bernard watched MacLeod die and revive during a mission for the French Resistance and MacLeod swore him to secrecy. Bernard goes to MacLeod for help. Meanwhile, Anne tells MacLeod that she is pregnant - by an old friend she sought for comfort after MacLeod's death. MacLeod tries to adjust to the concept of being a father. When Daimler kills Father Bernard and comes after Anne, MacLeod kills Daimler and Anne witnesses what being part of MacLeod's life really means. Unable to deal with the part of herself that wanted to see Daimler die, Anne leaves MacLeod.

When a valuable DaVinci sketch is stolen from a friend of MacLeod's in a robbery that killed two guards, MacLeod offers to act as go-between to ransom it back. He discovers the sketch was stolen by Kagan, an Immortal he faced once before, when Kagan was a bank robber in 1930 Paris and MacLeod killed his mentor. Meanwhile, Maurice asks MacLeod to talk to his troubled niece, Simone. Simone turns out to be more troubled than Maurice knows - she's a prostitute and Kagan's accomplice. MacLeod goes after Kagan, who protests his innocence in the deaths of the guards and who promises MacLeod that he'll change his ways if MacLeod will help him. When Simone, the only one who knows Kagan is the killer, is killed, MacLeod realizes that Kagan could never really change and confronts Kagan, taking his head.

Amanda accidentally helps Kalas escape from prison by trying to do MacLeod a favour and kill Kalas for him. After an attempt on Maurice's life thwarted by MacLeod, Kalas kidnaps Amanda to use as bait against MacLeod, but Amanda manages to escape. Meanwhile, Christine Salzer, the widow of a Watcher killed by Kalas (in Methos) decides to get her revenge on Immortals and Watchers alike by exposing their secret to the media. Dawson and Methos team up to try and talk Christine out of it, but she's determined to take a computer disk with the identities of all known Immortals and Watchers on it to a newspaper publisher. Dawson, desperate, tries to kill her outside the newspaper building, but is stopped by MacLeod and Methos. Christine enters the building and the Immortals and the Watcher know their lives are about to change forever.

As Christine tells her tale to the newspaper publisher, MacLeod and Amanda, knowing their world is about to end, finally admit they love each other. Kalas kills Christine and the publisher and steals the computer disk before they have a chance to spread the story. Kalas offers MacLeod a deal - MacLeod offers up his head or the contents of the disk are made public. Dawson and the Watchers attempt to find Kalas, but this only results in more dead Watchers. Methos tries to talk MacLeod out of it, but MacLeod agrees to fight Kalas on top of the Eiffel Tower. Kalas is defeated and the resulting Quickening, amplified by the Tower, sends a power surge that disrupts every computer in the vicinity - including Kalas'. The information on the disk is destroyed and Immortals and Watchers maintain their anonymity.

MacLeod buys a Celtic bracelet that he once gave to the love of his mortal life and then buried with her after her death. He returns to Glenfinnan to return the bracelet to her grave and learns of several gruesome ritualistic killings based around the Immortal who killed Mac's father. Naturally Mac must get to the bottom of the killings and keep his head in the process.

Friends become enemies and the past is revealed when Immortal Andrew Cord in gunned down and MacLeod discovers the sniper is Charlie DeSalvo, his good friend who used to run the dojo. Charlie, who left MacLeod to fight the good fight in the Balkans with his love, Mara, is after Cord, who murdered her. Dawson knows Cord as the man who saved his life in Vietnam after a mine explosion took his legs and he begs MacLeod not to fight him. MacLeod agrees—until Cord turns the tables and sets his sights on Charlie.

Richie encounters Mikey, a huge Immortal of limited mental development and a fascination with trains. Richie takes Mikey home to MacLeod, who advises him that taking care of Mikey could be trouble. MacLeod remembers coming to the aid of a young Indian in trouble, when his help got the man killed. While MacLeod faces Tyler King, an Immortal who's coming after Mikey, Richie must find the maturity to take responsibility for Mikey's situation.

The past comes back to haunt Richie when he spies Mark Roszca, the street punk who killed Tessa and gave him his first death. Richie is determined to go after Roszca and avenge Tessa's death. Meanwhile, MacLeod is distracted by the return of an old Immortal enemy, Peter Kanis - a master of hounds who uses his pack of dogs to track and exhaust his prey. This time his prey is Duncan MacLeod.

MacLeod's old friend, Kit O'Brady, comes into town in search of a good race horse and a change of luck. MacLeod knew Kit back in Gold Rush San Francisco, when Kit ran the Double Eagle Saloon. Kit lost the Double Eagle to Amanda in a poker game, who then renamed it Queen of Spades and has blamed her ever since for his string of bad luck - and he's vowed to kill her if he ever sees her again. When Amanda chooses to breeze back into MacLeod's life while Kit is there (in addition, her hatred for Kit hasn't wavered either), MacLeod is hard pressed to keep them apart and to keep them from killing each other.

Running for his life from Immortal Terence Kincaid, Kenny runs straight into Anne Lindsey's emergency room. Stashing Kenny in the hospital chapel, Anne calls MacLeod for help. MacLeod agrees to harbor him for one night only, but when MacLeod gets him home, Kenny discovers his long-lost teacher there, none other than Amanda.

World War I was officially over when Colonel Simon Killian ordered his troops into one last bloody attack on the Germans. MacLeod witnessed the massacre and made sure his testimony at Killian's court martial got Killian locked up forever. Seventy years later, Killian is back to return the favour. Meanwhile, Amanda has found a new friend, Melissa, a young thief out for thrills. Melissa wants to be just like Amanda so she changes her hair and her clothes to look just like her—so much so that Killian kidnaps her, thinking she's MacLeod's girlfriend.

Coming home from the movies, MacLeod and Richie witness a murder attempt on grocer David Markum. MacLeod saves Markum, but Markum's wife Alice is hit and killed. MacLeod and Richie go after the murderer and discover he's Immortal Paul Kinman just as the police arrive and arrest him. MacLeod wants Kinman's head. Kinman killed MacLeod's good friend Dennis Keating when they were in the court of Queen Anne. FBI agent Kaayla Brooks asks MacLeod and Richie if they can testify against Kinman, but MacLeod refuses because he can't kill Kinman if Kinman's in jail.

An ancient statue of the Hindu goddess Kali is purchased by the university where MacLeod teaches and is put on display. Its creator, Immortal Kamir, who has been searching for it for centuries, arrives determined to take it back to its home in India. Deva Ennis, the half-Indian department chairman who found the piece for the university, is equally determined to keep it. MacLeod, who has known Kamir since the Raj period, when India was controlled by the British Empire, knows Kamir is the last of the Thugee, a cult who worshipped Kali by ritually strangling her enemies.

Nearly 350 years ago, MacLeod was the devoted lover of Kristin Gilles, a beautiful Immortal who taught him to be a gentleman. When he found another love, Kristin refused to let him go, killing his new lover. Now Kristin is sharing her bed with another new Immortal full of potential - Richie. Methos, who knows MacLeod has never been able to kill Kristin because of his strict code of honour, has arrived in town to watch the fireworks as MacLeod tries to convince Richie that his new-found love is dangerous. MacLeod fights Kristin and disarms her, but once again cannot take her head because of his chivalrous nature. Methos then arrives and tells Kristin to pick up her sword. Methos wins the short sword fight that ensues, disarming and then beheading Kristin.

World famous pianist Claudia Jardine has a secret that even she doesn't know - she's destined to become Immortal. Immortal impresario Walter Graham, who has guided the careers of mortal greats like Shakespeare, sees his chance to shepherd Claudia's genius forever and kills her, triggering her latent Immortality - against MacLeod's better judgment. Meanwhile, Methos has fallen for Alexa, a waitress at Joe's who has a secret of her own.

ER trauma surgeon Anne Lindsey responds to the call for help after an explosion devastates a subway station, but when a subsequent explosion rocks the station, Anne is trapped. MacLeod remembers WWII London where he and the woman he loved, reporter Diane Terrin, were trapped in a bombed air-raid shelter during the Blitz, running out of time and air. MacLeod is desperate to rescue Anne before he loses her like he lost Diane.

A native American Immortal, Coltec, is a shaman who has fought many evil Immortals, absorbing their corrupted Quickenings. But the evil begins to overwhelm him, and his friend Duncan must defeat him ... without becoming evil himself.

MacLeod arrives in France, leaving a trail of hate and destruction in his wake. Methos finds him and discovers just how evil MacLeod has become when he tries to take Methos' head on holy ground. After MacLeod kills another good friend, Methos realizes that the only way to save MacLeod may be to kill him.

In 1755, MacLeod made a promise in order to save the life of a young friend. It comes back to haunt him when Kassim, the Immortal to whom he made the promise, demands that MacLeod assassinate the tyrannical dictator of a small Middle Eastern country. When his refusal gets a good man killed and puts Rachel's life in jeopardy, MacLeod is torn between doing what he believes is right and keeping his promise.

When masked thugs try to take Amanda's head in her sleep and steal the crystal given to her long ago by Rebecca, Amanda and MacLeod investigate. They discover the crystal may be part of the Methuselah Stone, a mystic talisman said to impart eternal life and invulnerability to the wearer and that the person willing to kill Amanda to get it may be - Methos?

Two-bit magician Danny Cimoli gets a whole new act when he's hit by a truck and becomes The Immortal Cimoli. Amanda and MacLeod find him in a circus, taking bullets in the heart to the delight of the audience and blissfully unaware he's now part of The Game. MacLeod tries to get Danny into shape when Crusader Damon Case comes to claim his head, but Danny's more interested in achieving real immortality - going down in history as a magician even greater than Houdini.

MacLeod's old friend Warren Cochrane is hiding a horrible secret he can't bear to remember. Realizing that an Immortal who won't remember what he is, is soon a dead Immortal, MacLeod tries to help Warren by reminding him of the history they shared together, of their battles for Scotland's freedom, and of their mission to return Bonnie Prince Charlie to the throne. But MacLeod might have helped his friend more by letting the past stay buried.

Agent Delaney returns to Paris solve a string of robberies that appear to be perpetrated by Xavier St. Cloud. Xavier's old student, Morgan d'Estaing, is using his old teacher's methods to commit these crimes. After Morgan poisons one of the Parisian inspectors and almost kills Delaney, Duncan has to find a way balance the rules of the game with protecting Delaney from a ruthless killer. (Note that this episode was held over until season 5 in the U.S.)

When Gina and Robert de Valicourt met 300 years ago, even Gina's suitors MacLeod and Fitzcairn had to admit they were destined for each other. Each century, as Robert and Gina renewed their wedding vows before their friends and fellow Immortals, their love grew stronger. But now their marriage is on the rocks. MacLeod decides it's up to him to reunite the once happy couple, and he enlists a very unwilling accomplice in his cunning plan.

Dawson's life is on the line when the Watchers try him on the charge of treason for his friendship with MacLeod. Watcher deaths have risen dramatically since Dawson first told MacLeod about the Watchers and the Tribunal is determined to punish Joe and stop the killing. MacLeod and Dawson argue his case, but even as the trial goes on, the Watcher killings continue.

Immortals and Watchers are poised at the brink of war. On the orders of the Watcher Tribunal, every Watcher in Europe is hunting for MacLeod, to bring him in dead or alive. MacLeod discovers that the real killer is Jacob Galati, a Gypsy MacLeod once travelled with, who has vowed to destroy all the mortals who wear the Watcher tattoo. He is convinced they are all out to destroy Immortals, since the rogue watchers, led by James Horton, executed his beloved wife.

MacLeod encounters an Immortal seer, Cassandra, whom he met as a child in Scotland. Cassandra related a prophecy to the future Immortal, that he would fight and vanquish a great evil. Now, centuries later, the Immortal Roland Kantos is after Cassandra. He has the power to mesmerize people with his voice, and captures MacLeod, intending to kill him once Cassandra is dead. Macleod eventually defeats Kantos, resistant to his foe's hypnotic voice thanks to candle wax he had used to plug up his ears.

The last time Richie Ryan saw Duncan MacLeod, MacLeod was about to take his head. He was stopped by Dawson's bullet, but Richie's world was shattered. Now Richie's back - kicking butt and taking heads. One of those heads belonged to Carter Wellan, and now Wellan's good friend Haresh Clay is out to avenge his comrade. MacLeod has his own long-time grudge against Clay, who humiliated and destroyed one of MacLeod's finest teachers. MacLeod must try to rebuild Richie's trust while they vie to be the one to face Clay in combat.

Carl Robinson, the former slave turned baseball player, has finally found the good life as a Major Leagues star - but when Carl is challenged by another Immortal and witnesses find him standing over the decapitated body, Carl is forced to go on the run from the cops. He turns to MacLeod for help when he is pursued by Immortal lawman Matthew McCormick, who has more than just a professional interest in taking Carl into custody.

MacLeod has to deal with Johnny K, a teenaged hood who doesn't play by the Immortal rules. And Joe has to deal with an old girlfriend.

Duncan finds himself cast in a romance novel along with an old opponent. Duncan wants to know how much the author, Carolyn Marsh, knows about him, but his rival wants to kill her.

MacLeod and Amanda are reunited with Cory Raines, the charming, smooth-talking Clyde to Amanda's Bonnie during their five-state crime spree in the 1920s. Amanda, always ready for a little larceny, is tempted by the carefree and adventurous lifestyle Cory offers her and takes him up on the offer when she realizes MacLeod won't beg her to stay with him. But MacLeod rides to the rescue when one of Cory's schemes goes astray.

Jennifer Hill believes the spirit of her dead husband Alec, an Immortal, is still with her. She comes to Alec's old friend MacLeod and begs him to appease Alec's spirit by killing the Immortal who took Alec Hill's head. Richie finds himself strangely attracted to the grieving young widow - until she realizes he's the very same Immortal being sought by Duncan.

Derek's faith in God helped save him from a violent life on the urban streets. When the young gospel singer is killed in a drive-by shooting, he awakens in the arms of God and is given the gift of eternal life. But what's he to do when his God recruits him as a warrior in the Holy War against Satan...and Satan turns out to be Duncan MacLeod? Duncan must face the delusional Immortal Lurca. Recruiting gullible new Immortals to do his bidding, Lurca challenges MacLeod on holy ground, the one taboo battleground for Immortals.

An Immortal is going around pretending to be Methos, encouraging other Immortals to give up the Game. Luring Richie into this dangerous frame of mind, MacLeod's fight with William Culbraith - another Immortal who led the Confederate prison camp Andersonville and whose own personal tragedy led him to give the orders that killed a mortal comrade of the Highlander's - is interrupted. Dawson warns about this phoney, who convinces Immortals to lay down their swords. But it always ends in tragedy; the converts are then killed by the next Immortal to come along, with the fake Methos continuing on his hopeless mission of preaching pacifism. An incredulous Methos confronts the impostor, and upon realizing he is genuine concludes he is daft. Culbraith, however, has other plans and takes the Messenger's head thinking he is Methos, hoping the Quickening will give him the strength to defeat MacLeod. In the end, however, it is Richie who takes Culbraith's head.

Ingrid Henning failed in an assassination attempt on Adolf Hitler during WWII. Since then, she has made it her mission to take out rising monsters before they can achieve political power, having concluded that Hitler's position protected him. Now, Henning is after a racist politician whose star is rising. MacLeod must confront his one-time comrade before her crusade takes the lives of innocent people.

MacLeod renews an old battle with an Immortal he encountered in 1867 as the outlaw Melvin Koren. MacLeod learns that Koren is really Kronos, who turns out to be thousands of years old and more than MacLeod can handle. To make matters more complicated, Cassandra is after Kronos to settle a score of her own. During the Bronze Age, Kronos led a small band of Immortals called the Four Horsemen on a raid that destroyed the seer's village and enslaved her. When Methos is revealed to have been one of the Horsemen, MacLeod tells him their friendship is over. The oldest living Immortal is forced to join up with Kronos, who has reunited the Horsemen. He manages, however, to break up what was supposed to be the decisive battle between MacLeod and Kronos, saying it could have gone either way.

The Four Horsemen are reunited. Cassandra is their prisoner. And worst of all, Methos has apparently rejoined his old comrades. As MacLeod makes plans to rescue Cassandra and face Kronos for the last time, Methos tries to learn why his companions have gotten back together after thousands of years while attempting to make his peace with Cassandra - who was his pet during her first captivity in the Bronze Age. Kronos' plan is revealed: he intends to use an engineered virus to wipe out most of humanity and conquer the survivors as part of an eternal empire. Methos eventually betrays his former comrades, with he and MacLeod simultaneously battling Kronos and Silas to the death in their own respective fights. The result is a double quickening as MacLeod and Methos win the day. Cassandra wants to avenge herself upon the redeemed and remorseful Methos, her former tormentor, but Duncan exhorts her to let him live. The centuries have truly changed Methos after all, and he had in the end helped to save humanity. Afterward, Methos implies that he had set up the entire confrontation with Kronos hoping MacLeod could do what he himself never could - take his Immortal brother's head.

The Chateau LeMartin has been in Marina's family for generations, but now the slimy Carlo Capodimonte threatens to foreclose on an old loan and take the chateau for himself. Desperate to save the family heritage, Marina kidnaps an American millionaire in order to pay off the loan. Unfortunately for Marina, the rich and charming Richard Redstone she has tied up in the cellar is none other than Richie Ryan.

Spanish swordplay, like Spanish dancing, is equal parts passion, skill, and strict discipline. The Immortal Otavio Consone is a master of both. An arrogant Spaniard who 150 years ago tried to teach MacLeod the sword art called The Mysterious Circle, Consone vied with MacLeod for the hand of a beautiful senorita, with tragic results. Now MacLeod must protect a Flamenco artist and her daughter from Consone's revenge.

According to official statements by the British government, the theft of the Stone of Scone, the legendary royal throne of Scotland, from Westminster Abbey in 1950 was simply a rowdy schoolboy prank. But was it? Or was it actually the bungled work of three rather hapless Immortals, attempting to fulfil a promise made centuries before?

After the Scottish massacre at the Battle of Culloden in 1746, Duncan MacLeod was a man possessed, obsessed, with killing the English bastards who had destroyed his people. Now Immortal Steven Keane has come to make MacLeod pay for his murderous crimes. Amanda urges MacLeod to take Keane's head and be done with it, but in his heart MacLeod knows that Keane is right - he is a murderer - and that Keane is judging him just like MacLeod has judged so many others.

Lord Byron, once one of the greatest and most scandalous writers of the 19th Century, is now a rock star. Methos remembers when his escapades led to a senseless fight that ended in a quickening witnessed by Mary Shelley, author of Frankenstein. Byron's debauchery and substance abuse have only increased with time. He lures an up-and-coming musician under Joe Dawson's tutelage into his dangerous lifestyle, and MacLeod becomes involved. Tragedy finally strikes, with Dawson's musical protege dying from a drug overdose. Methos finally realizes that his former pupil is beyond hope, and MacLeod fights Byron to the death.

Two archaeologists, Foster and Landry, are exploring a tunnel and they come face to face with a statue. Landry the more experienced and superstitious recognizes the statue as the ancient Zoroastrian demon Ahriman who plagues the world every thousand years by coming into human form. Foster is killed and Landry escapes. Landry warns Duncan that he is the champion who is to defeat Ahriman but both he and Richie think the man is crazy. But later Duncan sees James Horton, Kronos and other people he had killed before. Methos and Joe think he is losing it but Richie is willing to stay by his side whatever it takes. When Richie sees Horton taking Joe in a car to a racetrack with a gun to his head Richie calls Duncan and tell him he is going after them. Duncan who is with Joe at the time sees that it's a trap. He gets to the racetrack and is confronted by Richie, Horton, and Kronos. Ahriman has taken their form. He fights them but they disappear every time he attacks them. Then the real Richie appears and Duncan, thinking it is Ahriman, delivers the fatal blow. Joe and Methos arrive just as Ahriman in Richie's form laughs and leaves. Duncan runs away and Joe is left crying on Methos' shoulder. Richie is gone forever.

Once every thousand years, the Zoroastrian demon Ahriman returns to wreak havoc on the earth. He has already brought destruction to Duncan MacLeod's world, having caused Richie's death at Duncan's hand. But now MacLeod returns to Paris to take up his mantle as Champion and vows to destroy Ahriman. Sophie Baines knows how to defeat the demon, but is she MacLeod's ally or another pawn in Ahriman's game?

With the help of Father Beaufort and Joe Dawson, MacLeod finally begins to find a crack in Ahriman's armour. But he soon learns, along with Dawson, that anyone who helps the Champion becomes fair game for the demon. Joe is torn by guilt as Watchers - friends - are murdered by Ahriman, while Father Beaufort has his own inner demons to contend with. Not even Holy Ground is sanctuary, as MacLeod wrestles with Ahriman in the final battle - Armageddon.

When Duncan's friend is killed in a car explosion, the Highlander tries to track down the killer and runs into Alex Raven, a beautiful Immortal set upon fulfilling a vow dating back to World War II (flashback: Warsaw, 1942; England, ?) - no matter who gets in her way.

Embezzler, charmer, and con man extraordinaire, Willie Kingsley has a knack for turning up dead—and profiting from it handsomely (flashback: London, 1836; London, 1969). But when one last con goes horribly wrong, resulting in the death of his mortal wife, Willie turns to Duncan MacLeod to help him track down her killer. MacLeod wants justice; Willie wants revenge.

Police at her heels, killers on her trail, Kyra is on the run, with no memory of who - or what - she is. In the streets of Paris, she runs into Duncan MacLeod, who spins a wild story: That he and Kyra were lovers once, some three hundred years ago (flashback: France, 1640). That she is a soldier, a warrior. That she is Immortal. Kyra doesn't believe a word of it ... but if it isn't true, then why is someone after her head?

Four hundred years ago (flashback: Scotland, 1634), Devon Marek was a spoiled aristocrat with a passion for the hunt. His first teacher, Duncan MacLeod, forced him to give up his lands and title when he became Immortal, and Marek's never forgiven him for it. Now Marek has built a new empire, and he's ready to hunt his most dangerous prey yet: MacLeod. Obsessed with revenge, Marek imprisons the Highlander in a deserted high-rise office building ... with a gang of deadly mercenaries on his tail.

It's 1929, and Hugh Fitzcairn is enjoying the life of an English lord. He has good friends, a beautiful wife, trusted servants ... until one of his nearest and dearest murders him, that is. Now, with the help of his old friend Duncan MacLeod, Fitz is determined to uncover the identity of his own murderer - before more bodies start piling up.

When Immortal Katya's adopted daughter is murdered, the courts let the killer - her husband - walk free. Now Katya's an avenging angel, determined to see justice done at any cost ... but can MacLeod convince her that justice and revenge aren't the same thing? Flashback: Buenos Aires, 1958, 1996; England 1362.

All bounty hunter Reagan Cole wanted was a holiday in Paris with Duncan MacLeod; what she gets is international intrigue, a hunky underwear model, and a terrorist with a million-dollar price on his head. Flashback: London, 1833.

Centuries ago (flashback: Northern England, 1270), Bartholomew sent thousands to their deaths during the Crusades, amassing a fortune in God's name. Now Katherine is determined to take his head - if only she can keep her mortal husband, Nick, from interfering with the Game.

11. Indiscretions Methos and Joe Dawson join forces when past indiscretions threaten their lives - and loved ones - in the present. Morgan Walker has been nursing a grudge against Methos for two hundred years, and now he may finally get the chance to take his revenge ... by kidnapping Joe's daughter.

The popular series lays down its sword after six seasons in this stirring finale, in which MacLeod makes the ultimate sacrifice to save the lives of Amanda and Joe Dawson... then reunites with old friend Hugh Fitzcairn, and gets a look at what the world - and his friends' lives - would be like without him.

Fitz died three hundred years ago... Horton has taken over the Watchers... Joe Dawson has been reduced to a bitter, penniless vagrant... Amanda is a black widow... and Methos has rejoined the Horsemen to avenge his fiance's death. If you think that's bad, just wait till you find out what's happened to Richie and Tessa. Richie joins the Horsemen, but Methos kills him after he refuses to kill Dawson, who convinces Richie that this is not the life he wanted. Tessa is alive, but married to another man. Macleod tries to find love in Tessa, but realizes that what he's doing is wrong. He confronts Methos and kills him. Fitz arrives to tell him that this is a world of what will be if Macleod hadn't been born. Dawson, Amanda, and Methos wouldn't know how they would feel if Macleod hadn't been there for them.