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.
1994
1984
2005
1992
1979
2010
2025
1982
1983
2013
2019
2018
1977
2004
2021
2022
1952
2024
