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.
- Scene 36
Churchill’s order gives Turing command authority; he fires two linguists and begins reshaping the team around his approach.
- Just before
- Scene 45
Joan Clarke arrives despite an agent’s objection, sits the test, and finishes in five minutes thirty-four seconds, surprising Turing and securing her place among the candidates.
- Scene 46
The two successful candidates, including Joan, are sworn to secrecy; Turing explains that they will break Enigma to help win the war.
- Scene 47
Christopher lends young Alan a cryptography book and explains how visible messages can hide meaning until a key is found, recognizing Alan’s aptitude.
- Scene 48
This scene