The Perfect Alibi

Columbo episode: An Exercise in Fatality, released September 15, 1974
Milo Janus’s own sworn testimony that Gene Stafford was already in his gym clothes during the phony conversation after the murder is what will prove to be his undoing. “You tried to contrive a perfect alibi, sir,” Columbo chides. “And it’s your perfect alibi that’s going to hang ya.”

https://columbophile.com/2020/05/24/five-best-moments-from-an-exercise-in-fatality/

https://en.wikipedia.org/wiki/Gene_Barry
https://en.wikipedia.org/wiki/Leonard_Nimoy
https://en.wikipedia.org/wiki/Robert_Conrad