Anthony Bate, Derek Jacobi, and Michael Culver star in director Gordon Flemyng's docudrama detailing the Russian spy scandal that rocked Great Britain at the absolute height of the Cold War. In the three decades after college buddies Kim Philby (Bate), Guy Burgess (Jacobi), and Donald MacLean (Culver) were recruited to work as Russian spies, each of the men maintained high-level government security posts. Later, after passing along valuable U.S. atomic secrets to the Soviet Union, the three double agents were exposed, ultimately defecting to the Soviet Union in order to escape prosecution. ~ Jason Buchanan, All Movie Guide