
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)

as German Spy Plane Pilot (uncredited)