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.
- Just before
- Scene 89
Turing tests the candidate on a dummy Enigma machine; the message decodes to a German report locating the KMS Jaguar, and the team erupts in celebration.
- Scene 90
Dawn rises over Bletchley Park after the team’s first successful decrypt.
- Scene 91
The team discovers a threatened passenger convoy and considers intervening, but Turing stops the call because revealing the decrypts would expose Enigma; they learn Peter’s brother is aboard HMS Carlisle and still choose not to warn it.
- Scene 92
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