The Secret Service Season 1 Episode 1 A Case For The Bishop ( Air Date 1969-09-21 ) Genre Action & Adventure, Animation, Family, Comedy category. Overview "A Case For The Bishop is the pilot episode of the British Supermarionation television series "The Secret Service". It was written by Gerry & Sylvia Anderson, directed by Alan Perry and was first broadcast in ATV Midlands on the 21st September 1969.".