Mastermind 1980 Episode 15 Episode 15 ( Air Date 1980-12-07 ) Genre Talk category. Overview "The setting for this Semi-final match is the MacRobert Arts Centre, at the University of Stirling. It includes an Englishman specialising in a Scottish Queen and a Scot specialising in an English King! The contenders are: Duncan Forrest (computer programmer): William the Conqueror John Keogh (postgraduate student): Life and times of King Alfred Thomas McBrearty (teacher): Astronomy Don Young (teacher): Life of Mary Queen of Scots".