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
2006
1975
1981
2017
1986
2022
2001
1980
1999
2008
2016
2009
2002
1973
2025
2010