Sebastian is an undisciplined mathematics genius who works in the "cipher bureau" of the British Intelligence. While cracking enemy codes, Sebastian finds time to romance co-worker Rebecca Howard.
Acting
Dirk Bogarde's smug genius meets Susannah York's icy defiance.
Costume
Eye-popping mod fashion in every intelligence briefing.
Production
That swinging London cinematography makes spy work look sexy.
Director
David Greene
Trivia, insights & behind the scenes
Released at peak Cold War paranoia, Sebastian capitalized on the public fascination with Bletchley Park veterans finally getting public recognition.
Dirk Bogarde, openly queer in private Hollywood circles, reportedly fought the studio on making Sebastian aggressively heterosexual—his eye-rolling delivery of romantic lines was allegedly deliberate sabotage.
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