The Immortal thief, Amanda, sets out to discover who killed her fence. Meanwhile, police detectives Nick Wolfe and Claudia Hoffmann follow her. However, they soon discover that a crooked detective, Stanley Ferris, is responsible for the murder and trying to frame Amanda for the crime.

The murder of a Navajo code-talker throws Nick and Amanda together again. Nick is determined to learn Amanda's secret.

Nick is working for Bert trailing a suspect in an industrial theft case. He witnesses the man being killed by a woman, Marta, who claims diplomatic immunity. While Bert holds the woman in custody through his connections, he needs Nick to recover the plans at the woman's embassy. Nick needs a partner, an experienced thief. Amanda is on the run from an obsessed Immortal, Stefan Collier, and accepts the job as a diversion. Posing as husband and wife, they go into the embassy at a part and try to steal the plans. However, Marta manages to escape from jail and returns to the embassy, interrupting their plans. The two try to get the plans, but are distracted by Collier arriving on the scene. They catch up to Marta at the airport and take the plans. Marta declines efforts by Bert to help her, even though we find out she's his ex-wife. She is returned to her country, presumably to be killed for her failure, while Amanda defeats Collier. Copyright 2002 Steve Crow

A DA is murdered by a vengeful ex-ball player who was put away for manslaughter. Nick was the man who put him away, and now the ballplayer, Ray Bonita, is after Nick. Nick digs up the old case files and soon realizes that Bonita may have been innocent. The police refuse to review the case. Amanda gets involved, trying to warn Bonita away. Ray gets killed by his old buddy Darryl Keenan, who framed Bonita for the murder so he'd have the only shot at getting a big contract. Amanda goes undercover as a blackmailer. When Keenan shoots her, she grabs the evidence and Keenan is put away, with Bonita's name cleared. Copyright 2002 Steve Crow

An Immortal stalks and kills Donald Magnus, the brother of Nick's former captain Carl Magnus. The Immortal is a soldier, John Ray Fielding, and the brother had killed Fielding's men in the Gulf War due to "friendly fire". Fielding killed brother Donald to avenge his fallen comrades. However, in flashback we find out that Fielding "died" for the first time when Amanda stole orders from him that resulted in the death of him and his men. Now Fielding is out to kill Amanda. Unable to live with the guilt of what she has done, of actually killing people due to her irresponsibility, she yields herself to Fielding who kills her and prepares to take her head. However, Nick convinces Fielding that she has "died with honor" and there's nothing further to be won. Saluting Amanda's courage, Fielding departs.

Lucy kills an actor with a gun, then tries to cut off his head. The police intercept her before she can succeed and the actor, Wilson Geary, disappears. In flashback we find out that Lucy's husband Marco was an Immortal, and Wilson supposedly used her to set up a trap for Marco and take his head. Wilson has another story, that Lucy seduced him and he only killed in self-defense. Amanda eventually figures out that the truth lies somewhere in-between: a jealous Lucy didn't intend for things to go that far with Wilson, but that he still used her to set up Marco. Now Lucy wants revenge, but upon confessing the truth decides to leave. Geary will have none of it, and kidnaps her. Amanda goes to his theater to rescue Lucy, and takes his head.

The head of security at a bank is first drugged and framed as an alcoholic, then killed later by a telephone repairman. An Immortal, Victor Hanson, is responsible for both: he plans to steal the Valentino Diamond and needed the security plans. Victor is also making a play for Amanda, hoping to get her to help him steal the diamond before he kills her. The security guy is Nick's old mentor, and he soon spots Victor despite his disguises and realizes he is the same guy who is dating Amanda. Amanda initially refuses to believe Nick's accusations, thinking he's jealous. However, Victor tries to blow up Nick and Lucy lets Amanda knows about it. Rather than go ahead with the robbery, she fights Victor but Nick breaks in. He shoots Victor and then engages in pursuit. He's about ready to cut off Victor's head with a knife when Captain Magnus, another friend of the security guy, shoots Victor and he falls into the water. The body isn't found, and Nick and Amanda reconcile.