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 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.

A writer of murder mysteries wreaks revenge on her nephew-in-law by blaming him for her niece's murder.

Master magician the great Santini is amazing audiences at the Cabaret of Magic. What they don’t know is that Santini hopes to pull of the grandest illusion of his career - making club owner Jesse T. Jerome disappear. The crude Jerome is the only person who knows that Santini was a Nazi death camp guard named Stefan Mueller, He has been blackmailing the magician since learning his dark secret.

Leonard Nimoy plays a heart surgeon whose talents turn to murder. Stung by jealousy, he's planning a surgical death for his brilliant but ailing associate. Will Geer plays the intended victim.

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

Brilliant photographer Paul Galesko plans to murder his domineering wife, Frances, and pin the crime on an ex-convict named Alvin Deschler. His plan is to make it look as if Alvin kidnapped his wife and killed her before picking up the ransom money.

A fading actress kills her husband when he refuses to back her comeback show.

Columbo matches wits with a brilliant attorney responsible for the murder of the one man who could stifle his meteoric political career.

A famous psychiatrist uses an appointment with his doctor as his alibi while he calls his house, where his dead wife's lover is. The call serves as the first step in a conditioning reflex on the psychiatrist's dogs. The other part is the word Rosebud as uttered by the victim. When Columbo arrives on the scene, the psychiatrist is very understanding when police say they may have to put his dogs to death. But Columbo notices how friendly the dogs seem, and then there's the telephone that's hanging from it's hook.

A filmmaker kills one of his clients. in a break, during the screening of a new ad campaign

The head of a military school kills one of the governors by sabotaging the gun which is used on founders day.

While holidaying on board a cruise liner, Columbo helps capture the killer of the singer with the ship's band.

One member of a mystery-writing-team decides to kill his more talented partner when the better writer decides to go solo.

A private investigator kills his client's wife after she threatens to expose his blackmail scheme. The client then hires the detective to assist Columbo in the search for the killer.

An art critic, Dale Kingston, kills his uncle for his valuable collection of paintings. All the clues lead to the dead man's first wife. Can Columbo correct the Lieutenant's error before it is too late?

The mistress of a conductor becomes a target for murder after threatening to tell all to her lover's wife.

A wealthy man is murdered; his twin nephews stand to inherit, but which one committed the crime?

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 famous food critic is threatened by a restaurant owner, and so the critic leaves. Soon after, the cook dies. Columbo's involvement is welcomed by all the other chefs in the area, but Columbo wonders why the dead restaurant owner slammed the drawers before he died. And how could the poison that killed him enter an unopened bottle without the killer even being in the room? Could it have been suicide? But then there's the cheques to a mysterious society, and the victim's calender. Can Columbo's cooking skills really match the food critic's taste?

An architect kills his business partner and deliberately lets Columbo suspect him, leading Columbo to think that he's hidden the body in the foundation of a building under construction. He plans to let Columbo dig up the site and find nothing, knowing that its the perfect place to hide the body since Columbo would never look in the same place twice.

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.

A health club owner kills his partner who is about to uncover a fraud and makes it look like an accident

An inventor video tapes his mother-in-law's death, and then replays it back to the security guard, to give himself an alibi.

Columbo unwittingly becomes part of a deranged woman's diabolical plot to destroy the two men she believes responsible for her husband's death in prison. After murdering one, she moves in on the other, Columbo, to kill the person closest to him, his wife.