Based on the real life story of legendary cryptanalyst Alan Turing, the film portrays the nail-biting race against time by Turing and his brilliant team of code-breakers at Britain's top-secret Government Code and Cypher School at Bletchley Park, during the darkest days of World War II.
as Alan Turing
as Joan Clarke
as Hugh Alexander
as Detective Robert Nock
as John Cairncross
as Peter Hilton
as Commander Denniston
as Stewart Menzies
as Jack Good
as Sergeant Staehl
as Superintendent Smith
as Keith Furman
as Charles Richards
as Young Alan Turing
as Christopher Morcom
as Helen
as Sherborne Student 1
as Sherborne Student 2
as Sherborne Student 3
as Joan's Father
as Joan's Mother
as Teacher
as Headmaster
as MI6 Agent
as Military Policeman
as Margaret
as Electrical Assistant
as Woman in Crowd (uncredited)
as Ministry Man (uncredited)
as Wren (uncredited)
as Dancer (uncredited)
as Assistant Wren (uncredited)
as Crossword Man in Pub (uncredited)
as MI6 Agent (uncredited)
as Joan Clarke's Friend (uncredited)
as Bletchley Park Agent (uncredited)
as Passerby (uncredited)
as Military Policeman 3 (uncredited)
as Civilian (uncredited)
as Evacuee (uncredited)
as Bletchley Park Operative (uncredited)
as MI6 Agent (uncredited)
as Police Sergeant White (uncredited)
as Crossword Man (uncredited)
as First Aid Nurse (uncredited)
as German Pilot (uncredited)