Randall and Hopkirk (Deceased) - Season 1 - Eps 1: My Late Lamented Friend and Partner
In the pilot episode Marty Hopkirk is murdered by the husband of a client but returns as a ghost to help Jeff bring the man responsible for his murder to justice.
About Randall and Hopkirk (Deceased)

Title: Randall and Hopkirk (Deceased)
First Air Date: 1969-09-21
Last Air Date: 1970-03-13
Status: Ended
Rating: 7/10 (from 17 votes)
Language: EN
Seasons: 1
Total Episodes: 26
Network: ITV1
Genres: Comedy, Sci-Fi & Fantasy, Crime
Production Companies: Unknown
Synopsis
Randall and Hopkirk (Deceased) is a British private detective television series. In the initial episode Hopkirk is murdered during an investigation, but returns as a ghost. Randall is the only main character able to see or hear him, although certain minor characters are also able to do so in various circumstances throughout the series.
Cast

Annette Andre
Jeannie Hopkirk

Kenneth Cope
Marty Hopkirk

Mike Pratt
Jeff Randall

Martin Wimbush
Head Waiter