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.
2015
1966
1975
2018
2022
1985
1983
2009
1986
1984
2012
2000
1958
1978
2001
2023
