Columbo - Kausi 4

26. An Exercise in Fatality (1974)
A health club owner kills his partner who is about to uncover a fraud and makes it look like an accident.
Guest star: Robert Conrad, Gretchen Corbett, Pat Harrington Jr.

27. Negative Reaction (1974)
Famous photographer Paul Galesco plans to kill his wife. He does so and then sets up an ex-con he met during a prison photoshoot, Alvin Deschler, to look like he kidnapped the wife.
Director: Alf Kjellin
Guest star: Vito Scotti, Dick Van Dyke, Antoinette Bower.

28. By Dawn´s Early Light (1974)
The head of a military school, kills one of the governors, by sabotaging the gun, that is used on founders day.
Guest star: Bruce Kirby, Patrick McGoohan, Tom Simcox.

29. Troubled Waters (1975)
While holidaying on board a cruise liner, Columbo helps capture the killer, of the singer with the ships band.
Director: Ben Gazzara
Guest star: Poupee Bocar, Jane Greer, Robert Vaughn, Patrick Macnee, Dean Stockwell.

30. Playback (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.
Guest star: Trisha Noble, Oskar Werner, Gena Rowlands.

31. A Deadly State of Mind (1975)
A doctor kills the husband of the woman ,he is having an affair with. but he is ?seen' leaving the house by a witness,who is happens to be blind.
Guest star: Bruce Kirby, George Hamilton, Lesley Ann Warren, Fred Draper.