In 1934, four brilliant Cambridge students are recruited to spy for Russia. Fueled by youthful idealism, a passion for social justice and a talent for lying, they take huge personal risks to pass Britain's biggest secrets to Moscow.
Guy Burgess
Kim Philby
Donald Maclean
Anthony Blunt
Jack Hewit
Julian Bell
Otto
The Queen
Melinda Maclean
Colonel Winter
Porter
Charlie Givens
Miriam Block
Prof. Bruno Klein
Sir Michael Boal
Prince of Wales
Edward Hand
King George VI
Aileen Furse
Lord Halifax
Michael Frank
Oliver Lester
Arthur Quigley
Rightwing Student
Litzi Friedman
First BBC Man
Second BBC Man