Hunter suspects a traitor in his organization thwarted a prisoner exchange between the U.S. and a foreign government. Pierson: David Wayne. Gutherie: Milton Selzer. Dymytrk: Robert Middleton. Marty: Linda Evans. Harrison: Dick Balduzzi. Clerk: Raymond Singer.
Hunter encounters the East German who, nine years earlier, shot down his fiancée. First of two parts. Victor: Vic Morrow. Marty: Linda Evans. Caldwell: James Luisi. Jackson: Lincoln Kilpatrick. MacLain: Eric Server. Deedee: Zohra Lampert. Turk: Robert Donner. Julie: Jane Actman.
Marty is kidnapped by Soviet agents, who psychologically program her to assassinate her uncle, an American admiral. James Franciscus. Josef Patel: William Windom. Condon: Christopher Stone. Chip Davis: William Wellman Jr.
A plastic double of Hunter is created in a plot to frame him for the murder of a U.S. intelligence officer. Hunter/Cooper: James Franciscus. Frieda Scott: Diana Muldaur. Marty: Linda Evans. Danzig: Geoffrey Lewis. Baker: Ralph Bellamy. Dr. Harter: Richard Mulligan. Dr. Fearing: Whitney Blake. First Nurse: Dinah Anne Rogers.
A Soviet agent is suspected of killing an American who betrayed the Russians after leaking U.S. nuclear secrets to them. James Franciscus. Berne: Edward Mulhare. Marty: Linda Evans. Lawrence: Paul Mantee. Schiff: Lee de Broux. Vanover: Chuck Daniel. Henning: Alex Sheafe. Villas: Joe Renteria. Ritchie: Del Monroe. Abel: John Karlen.
Seeking asylum in the U.S., Hunter's adversary offers to betray the group that hired him to assassinate a dignitary. Second of two parts. James Franciscus. Victor: Vic Morrow. Marty: Linda Evans. Caldwell: James Luisi. Page: Dean Jagger. Deedee: Zohra Lampert. Katrin: Camilla Sparv. Turk: Robert Donner. Commentator: Kelly Lange.
Jim and Marty have just 48 hours to prevent the deliberate poisoning of a municipal water supply. Maklin: Robert Mandan. Winston: Michael Callan. Mrs. Reed: Collin Wilcox. Benson: Norman Alden. Tompkins: Rene Enriquez.
An investigation of a theft from a nuclear plant uncovers a right-wing conspiracy. James Franciscus. Turnbull: Cameron Mitchell. Margit Turnbull: Jamie Smith Jackson. Bellheimer: Robert Walden. Smitty: Elliott Street. Carlson: Walter Brooke. Pohlman: Joshua Bryant. McIlvane: Jordan Rhodes. Van Rhys: John Chandler.
Hunter tries to recover a kidnapped Chinese defector (Keye Luke), who was about to leak crucial intelligence. Maitland: Leif Erickson. Peg Foley: Teri Garr. Receptionist: Mary-Robin Reed. Jake Mitchell: Lawrence Casey.
An entertainer gets involved in Hunter's search for a link between U.S. intelligence and the mob. James Franciscus. DeLacey: Gary Lockwood. Marty: Linda Evans. Roberts: Stephen Boyd. Beerwood: Ken Swofford. Cissy: Susan Anton. Augie: Pat Renella. Teller: Naomi Stevens. Bodyguard: Todd Martin.