Plot: To achieve the title Supermind will be no mean feat, as this year's Mastermind Special brings together in competition, at the Old Library of the Guildhall in London, four quiz champions. They are: COMMANDER DEREK STUBBS from Malta, Captain of winning Forces' Chance team ELAINE SCRAGG from Macclesfield, Captain of winning Top of the Form team DAVID SHENKIN from Newport, Shropshire, Brain of Mensa 1977 Mastermind Champion 1977 Specialised and general knowledge questions will be asked in the Mastermind style, plus questions reflecting the format of the other three quizzes