Stewart Granger
— Superintendent Cooper Smith
Susan Hampshire
— Trudy Emberday
Cathleen Nesbitt
— Livia Emberday
James Culliford
— Luke Emberday
Brigitte Horney
— Oberin
Robert Morley
— Hubert Hamlyn
Sophie Hardy
— Sophie
Colin Gordon
— Dice
Eddi Arent
— Clossen
Diane Clare
— Clare
Allan Cuthbertson
— Det. Thompson
Caroline Blakiston
— Nun
Richardina Jackson
— Nun
Yuri Borienko
— Nailer
Conrad Monk
— Pasco
John Barrett
— Guide
Jeremy Hawk
— Bank Manager
James Robertson Justice
— Sir John (voice)
Monika Dietrich
— Photographic Model
Joseph Cuby
Inigo Jackson
Russell Waters
Tom Bowman
Carmen Dene
Carol Dilworth
Siegfried Schürenberg
— Sir John