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.
2006
1978
1996
1980
1985
1993
1974
1999
2008
2002
1984
2001
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2021
2000
1998
1995
2012
2003
