Columbo - Season 9 - Eps 4: Rest in Peace, Mrs. Columbo
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.
About Columbo

Title: Columbo
First Air Date: 1971-09-15
Last Air Date: 2003-01-30
Status: Ended
Rating: 8.079/10 (from 727 votes)
Language: EN
Seasons: 11
Total Episodes: 67
Network: ABC NBC
Genres: Crime, Drama
Production Companies: Universal Television, Studios USA, Universal Television Entertainment, NBC Studios
Synopsis
Columbo is a friendly, verbose, disheveled-looking police detective who is consistently underestimated by his suspects. Despite his unprepossessing appearance and apparent absentmindedness, he shrewdly solves all of his cases and secures all evidence needed for indictment. His formidable eye for detail and meticulously dedicated approach often become clear to the killer only late in the storyline.
Cast

Peter Falk
Columbo