Title: Fourth man
Subjects: Great Britain, Russian Espionage, Secret service, Soviet Espionage, Spion, Espionage, russian, Espionage, british, Intelligence service, great britain
Places: Great Britain
People: Donald Duart Maclean, Donald Duart, 1913- Maclean, Donald Maclean (1913-), Donald Maclean (1913-,), Guy Burgess (1911-1963), Guy Burgess (1911-1963,), Guy Francis de Moncy, - Burgess, Kim Philby, Kim Philby (1912-), Kim Philby (1912-,)