Randall and Hopkirk (Deceased) (1969) s01e04
Titre original : Never Trust a Ghost
A government employee, James Howarth, is murdered in his home. ""There were no witnesses"", the murderer boasts. But there WAS a witness: Marty Hopkirk. Trouble arises when Marty convinces Jeff to investigate. He finds the ""murdered"" man very much alive -- and upset. Marty stays on the case, but every time he convinces Jeff that something is wrong Jeff finds things completely different than the way Marty described him. Jeff can only conclude that Marty is hallucinating -- if that's possible for a ghost.