Mastermind 1989 Episode 5 Episode 5 ( Air Date 1989-02-12 ) Genre Talk category. Overview "with Magnus Magnusson from the University of Glasgow. This week four Scottish contestants compete for a semi-final place. Michael Weir (civil servant) History of Golf at St Andrews from 1754; Graham Clayton (corrosion engineer) Naval Actions of the First World War; Myra Knight (housewife) City of Glasgow from 1700; John Crichton (primary head teacher) The Life and Work of A. S. Neill.".