Columbo — Season 4

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

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.

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.

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

A doctor kills the husband of the woman he is having an affair with but is seen leaving the house by a witness who is happens to be blind.