Anton Diffring

Dr. Schuler

Erika Remberg

Elissa Caro

Yvonne Monlaur

Nicole Vanet

Donald Pleasence

Vanet

Jane Hylton

Angela

Kenneth Griffith

Martin

Conrad Phillips

Inspector Arthur Ames

Jack Gwillim

Supt. Andrews

Vanda Hudson

Magda von Meck

Yvonne Romain

Melina

Colette Wilde

Evelyn Morley

William Mervyn

Dr. Morley

Peter Swanwick

Inspector Knopf

Carla Challoner

Nicole (as a Child)

Kenny Baker

Dwarf

Walter Gotell

Baron Von Gruber

Kenneth J. Warren

First Roustabout

Jack Carson

Chief Eagle Eye

Glyn Houston

Carnival Barker (uncredited)

Reg Thomason

Roustabout (uncredited)

Arthur Dibbs

Circus Audience Member (uncredited)