This second heat brings together contestants who between them have a wide variety of talent.As they grapple with the answers to questions both specialist and general knowledge, they will require all their mental faculties to be ticking over in top gear in this quest for the title Mastermind 1975. Tonight's contenders are:DOROTHY F. BUSHELL , unemployed RICHARD J. EVERETT , schoolmaster MARGARET ASKEW , journalist ARTHUR GERARD, retired