Plot: The contenders in tonight's third semi-final are: Bruce Watson (antique furniture restorer) Life and works of James Brindley; Helen Grayson (technical writer) Novels of Kurt Vonnegut; Michael Clark (plant and tool assistant) Life and reign of Louis XIV (1638-1715); Allan Draycott (part-time lecturer) History of test cricket since 1877. With Magnus Magnusson from the Whitworth Hall at the University of Manchester