The story of the WWII project to crack the code behind the Enigma machine, used by the Germans to encrypt messages sent to their submarines.
Acting
Winslet's Hester is sharp, stubborn, and steals every scene.
Production
Bletchley Park re-created with obsessive period detail.

Director
Michael Apted
Trivia, insights & behind the scenes
The real Bletchley Park codebreakers were sworn to secrecy for 30 years; some died without ever telling their families what they accomplished.
The film controversially sidelined Alan Turing—the actual genius behind the breakthrough—in favor of a fictional tortured mathematician and a romance plot.