Patrick Magee
Maniac
Leo McKern
Captain Grimes
Geneviève Page
Margot Beste-Chetwynde
Colin Blakely
Solomon Philbrick
Donald Wolfit
Dr. Augustus Fagan
Duncan Lamont
Inspector Bruce
Donald Sinden
The Prison Governor
Patience Collier
Flossie Fagan
Paul Rogers
Chief Warder
Jack Watson
Gallery Warder
Kenneth Griffith
Mr. Church
John Cater
Blackall
Michael Elwyn
Alastair Vane-Trumpington
Felix Aylmer
Judge
Clifton Jones
Chokey
Rodney Bewes
Arthur Potts
Robert Harris
Prendergast
Griffith Jones
Sir Humphrey Maltravers
Jeremy Child
Nigel
Roland Curram
Otto Silenus
Helen Christie
Mrs. Clutterbuck