At Bletchley Park, Alan Turing must persuade a skeptical team to build a machine that can break Enigma before the war is lost, while concealing the self the law condemns.
- Scenes 1–12
Turing is investigated as a guarded outsider in 1951, then enters Bletchley in 1939 looking for the puzzle he can solve.
- Scenes 13–30
He sees the scale of Enigma, believes a machine can solve it, and grows isolated from colleagues who make little progress.
- Scenes 31–50
Churchill’s order gives Turing authority and his half-built machine advances toward sustained work.
- Scenes 51–88
Joan joins the project; the team builds and tests the machine while Turing learns to rely on collaborators.
- Scenes 89–91
A first decrypt proves the machine works, and the team immediately faces the choice to let the Carlisle convoy be attacked.
- Scene 107
Menzies reveals that he placed Cairncross as a spy and threatens Turing into sharing secrets, making the cost of the intelligence operation personal.
- Just before
- Scene 109
Turing tries to end his engagement and confesses he is homosexual; Joan says their unusual partnership can still work, but when he cruelly claims he never cared for her, she refuses to leave and throws her ring at him.
- Scene 110
Young Alan learns from the headmaster that Christopher died after concealing his illness; Alan denies their closeness and leaves stunned.
- Scene 111
Turing’s team works together for two more exhausting years, weighing the deaths they cannot prevent as their hidden intelligence guides Allied victories.
- Scene 112
This scene
