Anton Diffring
Dr. Schuler
Acting
Erika Remberg
Elissa Caro
Acting
Yvonne Monlaur
Nicole Vanet
Acting
Donald Pleasence
Vanet
Acting
Jane Hylton
Angela
Acting
Kenneth Griffith
Martin
Acting
Conrad Phillips
Inspector Arthur Ames
Acting
Jack Gwillim
Supt. Andrews
Acting
Vanda Hudson
Magda von Meck
Acting
Yvonne Romain
Melina
Acting
Colette Wilde
Evelyn Morley
Acting
William Mervyn
Dr. Morley
Acting
Peter Swanwick
Inspector Knopf
Acting
Carla Challoner
Nicole (as a Child)
Acting
Kenny Baker
Dwarf
Acting
Walter Gotell
Baron Von Gruber
Acting
Kenneth J. Warren
First Roustabout
Acting
Jack Carson
Chief Eagle Eye
Acting
Glyn Houston
Carnival Barker (uncredited)
Acting
Reg Thomason
Roustabout (uncredited)
Acting
Arthur Dibbs
Circus Audience Member (uncredited)
Acting