Columbo - Season 4
1 - An Exercise in Fatality
Air Date: September 15, 1974
A health club owner kills his partner who is about to uncover a fraud and makes it look like an accident
2 - Negative Reaction
Air Date: October 15, 1974
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.
3 - By Dawn's Early Light
Air Date: October 27, 1974
The head of a military school kills one of the governors by sabotaging the gun which is used on founders day.
4 - Troubled Waters
Air Date: February 9, 1975
While holidaying on board a cruise liner, Columbo helps capture the killer of the singer with the ship's band.
5 - Playback
Air Date: March 2, 1975
An inventor video tapes his mother-in-law's death, and then replays it back to the security guard, to give himself an alibi.
6 - A Deadly State of Mind
Air Date: April 27, 1975
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.