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.
1953
1977
2024
2025
1986
2007
1989
1991
2014
2013
2004
2019
2018
2022
2021
2005