Magnus Magnusson tests four more contenders in the Debating Chamber of the Oxford Union Society.
Contestants: David Watts
(Royal Navy officer) Elizabethan theatre;
Indrani Hettiaratchi (teacher) life and works of Frederic Chopin;
Roderick Diggins
(clerk) English royal palaces, 9th century to 1912;
Alan Colby (local government officer) life and works of Francois Truffaut. Director Andrea Conway Producer Peter Massey