The Old Library, Guildhall, London, is host to seven countries who are in contention for the Mastermind International title for 1980. The contenders' occupations are as varied as their specialist subjects: a teacher, proof-reader, chemical engineer, retired airline captain, student, conservationist and a research assistant. They are: Rachel Stewart (Australia): Life and Times of Julius Caesar Paul Bowden (New Zealand): World Heavyweight Boxing Championships, 1915-1975 Ehud Fuchs (Israel): Napoleon's Marshals Gerrit Jan Korteling (Netherlands): History of Icons, 4th-15th Century Gina Barreca (USA): Life and Works of Tennessee Williams Lewis Clohessy (Republic of Ireland): Life and Music of Bix Beiderbecke Philip Jenkins (United Kingdom): History of Christianity, AD 35-200