Emmy-winning actor Patrick McGoohan guest stars as a homicide suspect whose devious answers are prompted by his hidden identity as a top spy. Leslie Nielsen also guest stars.

Nelson Brenner (McGoohan) , an advertising executive who leads a double life as a top domestic spy, sends his former partner on an assignment to recover microfilm from a foreign agent. In reality, Brenner actually sets up his ex-partner, code name Geronimo (Nielsen), for a homicide that Brenner masks as a mugging. When Columbo investigates the crime, his clues lead him through a series of mysterious identities and a maze of domestic intrigue. (1975)