Colditz - Season 1 - Eps 8: The Traitor
German guards are foiling too many escape attempts which leads Colonel Preston to believe that there is an informer working within the imprisoned population, so an inquiry is started to identify the suspect, but this sets off a chain of events which reveal the darker side of life in Colditz.
About Colditz

Title: Colditz
First Air Date: 1972-10-19
Last Air Date: 1974-04-01
Status: Ended
Rating: 7.3/10 (from 12 votes)
Language: EN
Seasons: 3
Total Episodes: 28
Network: BBC One
Genres: Drama, War & Politics
Production Companies: Unknown
Synopsis
Colditz is a British television series co-produced by the BBC and Universal Studios and screened between 1972 and 1974. The series deals with Allied prisoners of war imprisoned at the supposedly escape-proof Colditz Castle when designated Oflag IV-C during World War II, and their many attempts to escape captivity, as well as the relationships formed between the various nationalities and their German captors.
Cast

David McCallum
Flt. Lt. Simon Carter

Bernard Hepton
Kommandant

Christopher Neame
Lt. Dick Player

Edward Hardwicke
Capt. Pat Grant

Peter Penry-Jones
P.O. Peter Muir

Jack Hedley
Lt. Col. John Preston