本尼迪克特·康伯巴奇
Benedict Cumberbatch
饰：阿兰·图灵 Alan Turing
凯拉·奈特莉
Keira Knightley
饰：琼·克拉克 Joan Clarke
马修·古迪
Matthew Goode
饰：休·亚历山大
罗里·金奈尔
Rory Kinnear
饰：诺克 Nock
查尔斯·丹斯
Charles Dance
饰：指挥官丹尼斯顿 Commander Denniston
马克·斯特朗
Mark Strong
饰：斯图尔特·孟席斯 Stewart Menzies
汤姆·古德曼-希尔
Tom Goodman-Hill
饰：警长 Sergeant Staehl
James Northcote
James Northcote
饰：杰克 Jack Good
大卫·G·罗宾逊
David G. Robinson
饰：Police Sergeant White (uncredited)
安库塔·布雷班
Ancuta Breaban
饰：Wren (uncredited)
塔彭丝·米德尔顿
Tuppence Middleton
饰：海伦 Helen
艾伦·里奇
Allen Leech
饰：约翰·凯恩克罗斯 John Cairncross
马修·比尔德
Matthew Beard
饰：彼得·希尔顿 Peter Hilton
李·阿斯奎斯-科
Lee Asquith-Coe
饰：MI6 Agent (uncredited)
Victoria Wicks
Victoria Wicks
饰：琼的母亲 Joan's Mother
Viv Weatherall
饰：Military Policeman
克里斯·考林
Chris Cowlin
饰：Military Police Officer (uncredited)
伊兰·古德曼
Ilan Goodman
饰：Keith Furman
Scott Stevenson
Scott Stevenson
饰：Bletchley (uncredited)
Leigh Dent
饰：Passerby (uncredited)
亚当·诺威尔
Adam Nowell
饰：Technician (uncredited)
斯图尔特·马修斯
Stuart Matthews
饰：Bletchley Park Operative (uncredited)
埃里克斯·劳瑟
Alex Lawther
饰：Young Alan Turing
Mike Firth
Mike Firth
饰：Crossword Enthusiast (uncredited)
丹尼斯·科洛斯克
Denis Khoroshko
饰：Civilian (uncredited)
Josh Wichard
饰：German Spy Plane Pilot (uncredited)
Peter Brown
饰：Navy Captain (uncredited)
Harry Leonard Parkinson
饰：Evacuee
汉娜·弗林
Hannah Flynn
饰：Wren (uncredited)
杰克·巴农
Jack Bannon
饰：克里斯托弗 Christopher Morcom
Alex Corbet Burcher
Alex Corbet Burcher
饰：Dancer (uncredited)
杰克·塔尔登
Jack Tarlton
饰：Charles Richards
卢克·霍普
Luke Hope
饰：MI6 Agent (uncredited)
理查德·坎贝尔
Richard Campbell
饰：Crossword Man in Pub (uncredited)
亚历山大·库珀
Alexander Cooper
饰：Bletchley Park Agent (uncredited)
Lisa Colquhoun
Lisa Colquhoun
饰：Joan Clarke's Friend (uncredited)
Jack Brash
Jack Brash
饰：Evacuee (uncredited)
James G. Nunn
James G. Nunn
饰：Sherborne Student 2
Vincent Idearson
Vincent Idearson
饰：MI6 Agent (uncredited)
Charlie Manton
Charlie Manton
饰：Sherborne Student 3
Dominic Charman
Dominic Charman
饰：Sherborne Student 1
格雷斯·卡尔德
Grace Calder
饰：Assistant Wren (uncredited)
Lauren Beacham
Lauren Beacham
饰：RAF Wren (uncredited)
Heather Broderick
Heather Broderick
饰：Passerby (uncredited)
丹尼尔·查普尔
Daniel Chapple
饰：MI6 Agent (uncredited)
David Charkham
David Charkham
饰：Joan's Father
史蒂芬·威丁顿
Steven Waddington
饰：Superintendent Smith
Laurence Kennedy
Laurence Kennedy
饰：Headmaster
约瑟夫·奥利维拉
Joseph Oliveira
饰：M16 Agent (uncredited)
Guna Gultniece
Guna Gultniece
饰：Passerby (uncredited)
黛布拉·利·泰勒
Debra Leigh-Taylor
饰：Evacuee (uncredited)
奥斯卡·哈顿
Oscar Hatton
饰：Evacuee (uncredited)
Sam Exley
Sam Exley
饰：Military Policeman 3 (uncredited)
Amber-Rose May
Amber-Rose May
饰：Joan Clarke's Friend (uncredited)
Ingrid Benussi
Ingrid Benussi
饰：Dancer (uncredited)
John Redman
John Redman
饰：Young Officer (uncredited)
Nicola-Jayne Wells
Nicola-Jayne Wells
饰：First Aid Nurse (uncredited)
James Gard
James Gard
饰：School boy
Ryan Parker
Ryan Parker
饰：Young Guy on the Street (uncredited)
Ben Farrow
Ben Farrow
饰：Military Police (uncredited)
Esther Eden
Esther Eden
饰：WW2 Wren (uncredited)
Samantha Moran
Samantha Moran
饰：Wren (uncredited)
尼古拉斯·布拉特
Nicholas Blatt
饰：Ministry Man (uncredited)
Bartosz Wandrykow
Bartosz Wandrykow
饰：Crossword Enthusiast (uncredited)
利·赫兰德
Leigh Holland
饰：M16 Agent (uncredited)
Tim Van Eyken
Tim Van Eyken
饰：MI6 Agent
Alice Tapfield
Alice Tapfield
饰：Wren (uncredited)
安德鲁·哈维尔
Andrew Havill
饰：Teacher
蒂姆·斯蒂德
Tim Steed
饰：Electrical Assistant
温斯顿·伦纳德·斯宾塞·丘吉尔
Winston Churchill
饰：本人
Miranda Bell
饰：Margaret
阿什利·哈德森
Ashley Hudson
饰：British soldier (uncredited)
Adam Scown
Adam Scown
饰：Crossword Soldier (uncredited)
Carmen Coupeau Borras
Carmen Coupeau Borras
饰：Operator (uncredited)
凡妮莎·柯比
Vanessa Kirby
维尔·博登
Will Bowden
饰：Military Policeman
哈里·S·杜鲁门
Harry S. Truman
饰：自己
维多利亚·威克斯
Victoria Wicks
饰：Joan's Mother
蒂姆·范·艾肯
Tim van Eyken
饰：MI6 Agent
劳伦斯·肯尼迪
Laurence Kennedy
饰：Headmaster
海莉·乔安妮·培根
Hayley Joanne Bacon
饰：Woman in Crowd
查里斯·丹斯
Charles Dance
饰：Commander Denniston