Mike Delaney
Gene Nelson
Jill Rabowski
Faith Domergue
Inspector Hammond
Barry MacKay
Scruffy (office boy)
Charles Hawtrey
Sister Brown
Mary Jones
Dr. Stephen Rayner / Jarvis
Peter Arne
Detective Inspector Cleary
Joseph Tomelty
Robert Maitland
Donald Gray
Emmanuel Vasquo
Vic Perry
Dr. Bressler
Paul Hardtmuth
Dr. Preston
Martin Wyldeck
Detective Sergeant Haines
Leonard Williams
Editor (Alcott)
Launce Maraschal
Production Manager
Jim O'Connolly
Director
Ken Hughes
Producer
Alec C. Snowden
Editor
Geoffrey Muller
Screenplay
Charles Eric Maine
Director of Photography
A.T. Dinsdale
Camera Operator
Ron Robson
Art Direction
George Haslam
Makeup Artist
Jack Craig
Sound Recordist
Dick Smith
Sound Editor
Jim Groom
Hairstylist
June Robinson
Assistant Director
Ted Sturgis
Denis Johnson
Novel
Continuity
Marjorie Owens
Ronald Abbott