Overview: The contenders tonight are: James Moore (freelance writer) British-American musical theatre, 1915-35; Andrew Pantin (civil servant) Life and works of Christopher Isherwood; Brian Daugherty (post-graduate student) History of 20th-century astronomy; David Steele (local government accountant) Life and career of David Lloyd George. The last place in the semi-finals is at stake. With Magnus Magnusson from the Firth Hall at the University of Sheffield.