Every season of Cambridge Spies ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of Cambridge Spies!

While at Cambridge university two students, Philby and Maclean, are approached by Intelligence officers and requested to spy. It does not take Philby too long to realise that it is not the British Intelligence services who want them, but the Russians. They agree to spy for the Russians and, once the school year ends, Kim is sent on assignment to Vienna, where he marries committed communist Lettie Friedman. Once back in England, Philby's runner,Blunt, tells him that the marriage is not in the interests of the mission, and Philby has to end it.

Episode One

Episode Two

With the German invasion of the Soviet Union, the spies find themselves working for the Allies.

Episode Three

The Soviets detonate an atom bomb and take the world by surprise.

Episode Four

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.

The Best Seasons of Cambridge Spies

The Best Seasons of Cambridge Spies

Season 1