In the early 1970s during the Cold War, the head of British Intelligence, Control (Sir John Hurt), resigns after an operation in Budapest, Hungary goes badly wrong. It transpires that Control ...

This film tells their full tragic story for the first time. Toby Jones (Harry Potter, Titanic, Hunger Games, Tinker Tailor) and Sienna Miller (The Edge of Love, Factory Girl, Alfie, Layer Cake ...