Season 3

Viveca Scott, the founder of Beauty Mark Cosmetics, is being threatened by her rival David Lang. When he finds out that her revolutionary cream formula actually removes wrinkles, he has the formula pirated.

A wine connoisseur kills his half- brother to prevent him selling the family winery to a merchant company so he can pay off his gambling debts.

A Senate Candidate running for office kills his campaign manager by making it look like he was the target for the killer's bullet.

A motivational researcher blackmails to further his career, kills a man, then frames the victim's wife.

A publisher hires a Vietnam vet to kill his star author and thus give himself an alibi before the writer can defect to another publisher.

The director of a government institute that employs various scientific geniuses commits a clever murder. But another kind of genius is on the case: Lt. Columbo.

A Country and Western singer kills his overpowering wife in a plane crash while he parachutes to safety.

A police commissioner provides an alibi to a friend who has just killed his wife. Later the commissioner kills his own wife and gets the friend to repay the favour.