Inspector Morse (1990)
A Master Mason certificate hangs on the wall of a meeting room in the theatre where the first murder takes place. Its presence is unremarked but incongruous.
Masonic Mysteries. January 24, 1990 (Series 4, episode 15). Producer: David Lascelles, Director: Danny Boyle, Writer: Julian Mitchell. Carlton/Central Television's series starring John Edward Thaw (3 January 1942 - 21 February 2002) as Chief Inspector Endeavor Morse and Kevin Whately as Detective Sergeant Robert Lewis, Richard Kane as Inspector Bottomley and James Grout as Chief Superintendent Strange.