An airline stewardess is looking for her sister, a militant ecologist who disappeared after a bombing at a chemical company.

Feuding half-sisters accuse each other of stealing their dead father's skin-care formula.

The Bouziki Bar is besieged by professional killers who are after a murder witness in the last stages of pregnancy.

A scientific project and a student who was working on it disappear from a school for the gifted.

Pete and Mac investigate white slavers who smuggle aliens from Latin America.

A gambling mogul kidnaps Malcolm to ensure that Pete will protect his golfer son.

Pete and Mac look for a militant ecologist who went into hiding after a chemical-company bombing.

Mac and Pete bargain for the life of a girl held hostage by gunmen at the police officers' reunion.

An elderly captain and his deckhand are missing from a yacht found drifting where several vessels recently disappeared.

Mac and Pete investigate the disappearance of a young sweepstakes winner employed at the San Diego Zoo. A rare white rhinoceros may hold the vital clue in the zoo veterinarian's bizarre disappearance.

Mac has an interest in the auction of a manuscript said to name the killer of an actress murdered after a lurid life. After claiming that he knows the identity of the man who murdered a famous actress 20 years ago, an eccentric man issues invitations to a wide range of suspects, but the answer is not as simple as one might be led to believe.

Pete and Mac are surprised when they discover that the cook at the Bouziki Bar turns out to be a high-ranking member of a Chinese tong. A tong war will erupt in the Chinese community if Pete and Mac don't find their friend Wang.

Pete and Mac (Robert Wagner, Eddie Albert) try to learn who is using criminal tactics to drive an all-woman taxi company out of business.

Pete plays goalkeeper and Mac masquerades as a trainer after a soccer team's star player is murdered. They hope to draw out the killer when Pete takes the place of the slain player.

Pete and Mac journey to Mexico to save an experiment in underwater habitation for its attractive young leader after she inherits the job from her father.

Janet Blair plays a wife who hires Pete and Mac to find her missing husband just before she is murdered.

A vaudeville performer is pulled from the gutter by a good friend and is back in the limelight doing his show —but his new-found popularity is marred when a series of attempts are made on his life. Pete and Mac look to the man's past to find out what's prompted the threats. David Wayne guests.

Pete and Mac go to Las Vegas to help a young woman determine the cause of her pilot father's fatal air crash, and discover that there is more than meets the eye.

Guest stars Wayne Newton, Dionne Warwick, George Maharis, Chuck McCann, Foster Brooks, Jack Colvin and Pamela Hensley appear in this two-hour special presentation of "Switch." Pete and Mac go to Las Vegas to help a young woman determine the cause of her pilot-father's fatal crash. During a flight over the crash site, Pete is literally dumped out of the airplane.

Pete takes on the role of movie studio security officer while Mac toils before the camera to find a star's would-be murderer.

Pete and Mac enter the perilous world of Grand Prix racing to solve the mysterious death of a top racing driver.

Pete and Mac follow the pro tennis circuit to track down a murderer. When a star tennis player is shot on the court, the team's coach enlists the help of his old friend, Pete Ryan, in locating the killer responsible.