Philby, Burgess and Maclean
Recruited by the Russians during their days at Cambridge, three young Englishmen rise to become high-ranked MI5 agents until their exposure in 1949.

Kim Philby

Guy Burgess

Donald Maclean

Aileen Philby

Melinda Maclean

Sir Stewart Menzies

Farquesson

Philby's Control

Herbert Morrison

Graves

Pattterson

Reed

Peterson
Skardon
Helenus Milmo

Marcus Lipton
Reporter
Major Sansom
Volkov