Pete Wilder just saved Richie from an attack by some guys wearing Watcher tattoos. Or did he? Nothing is what it seems, and MacLeod becomes increasingly wary of Pete, despite Richie's protests that the guy is his friend. When MacLeod's mistrust gets the possibly innocent Pete killed, Mac becomes increasingly unsure of himself. Unknown to MacLeod, his old enemy Horton is pulling all the strings. Horton is secretly training escaped killer Lisa Halle to go after MacLeod while he's troubled and vulnerable.

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, 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 favor 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.

Lord Byron, the brilliant Romantic poet, is alive and well and living the decadent life of a rock star. He lives life way over the edge and has taken some promising young musicians over the edge with him. When following in Byron's footsteps tragically ends the life of Dawson's protege, MacLeod is faced with a decision -- is the beauty and genius that is Byron worth the cost?

The dead are walking the streets of Paris. The forces of evil are coming. Is MacLeod being readied for some higher calling -- or is he simply losing his mind?

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 armor. 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.

Now that his grandson, Carl, manages the bank, George Thomas can relax with his old friend, Duncan MacLeod. But the good life is cut short when George's car explodes in a ball of flames -- leaving MacLeod to find George's killer. The trail leads to Alex Raven, a beautiful Immortal with a taste for danger and a fifty-year-old promise to fulfill... no matter what the cost.

Embezzler, charmer, and con man extraordinaire, Willie Kingsley has a knack for turning up dead... and profiting from it handsomely. 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.

Four hundred years ago, 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 highrise 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.

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.

Centuries ago, 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.

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.

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?

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 sword 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.

While visiting the courthouse to clear up Tessa's traffic tickets, MacLeod, Tessa, and Richie are among a group that is taken hostage by a band of men bent on freeing their leader, Slade, from imprisonment. When Slade's demands are not met, he chooses a hostage to sacrifice. MacLeod makes sure that hostage is himself, and returns from the dead to hunt down the gunmen one by one, as the police watch helplessly from outside.

A deadly herbal drug takes the life of Richie's friend, and MacLeod suspects the source of the drug is another Immortal, Kiem Sun, who has long sought to perfect such a drug and remove its lethal side effects for the betterment of mankind. But a disciple of Kiem Sun's is using the drug for his own gain, and MacLeod and his old friend must track him down. When it becomes clear that Kiem Sun plans to continue his experiments, MacLeod destroys the remaining sample of the drug.

Duncan McLeod is roused from his peaceful existence with the love of this life, Tessa Noel, when he is challenged to Immortal combat by Slan Quince, an Evil Immortal. An old friend and Clansman, Connor MacLeod, comes to try and convince Duncan to once more join the fray in the battle of Good versus Evil. This episode also introduces Richie Ryan, a kid from the streets whom Duncan befriends after catching him breaking into his antique store.

MacLeod is struck and "killed" by a speeding automobile. When he revives in the hospital, he attracts the attention of a deranged doctor, who kidnaps MacLeod for his research on a miracle cure for trauma. When MacLeod escapes from the doctor, the doctor murders a potential witness and frames MacLeod for it.

Richie Ryan tries to protect an old girlfriend, Nikki, from a band of drug dealers. This puts them both in jeopardy from an Immortal, Voshin, whom MacLeod knows from an adventure during the Second World War when he was trying to smuggle Jewish refugees out of occupied Eastern Europe. Nikki complicates the story by withholding drug money she has stolen from the gang, thinking she can use it to make a better life for her small daughter. Tessa, meanwhile, becomes enamored of the child, raising issues for her and MacLeod.