Mastermind 1974 Episode 4 Episode 4 ( Air Date 1974-09-26 ) Genre Talk category. Overview "Introduced by Magnus Magnusson from Westfield College, University of London Another chance for you at home to match your general, and perhaps specialist, knowledge against that of our four contenders, who this week are: F. D. BRYAN-BROWN , schoolmaster MRS O. EVANS , housewife H MORLEY-FLETCHER , auctioneer M. PAUL , film writer/director".