Barbara Steele

Cynthia Hichcock

Robert Flemyng

Prof. Bernard Hichcock

Silvano Tranquilli

Dr. Kurt Lowe

Maria Teresa Vianello

Margherita Hichcock

Harriet Medin

Martha, the maid

Spencer Williams

Al Christianson

Evaristo Signorini

Inspector Scott

Giovanni Querrel

Neil Robinson

Howard Nelson Rubien

Riccardo Freda

Director

Ernesto Gastaldi

Writer

Italia Scandariato

Costume Design

Euclide Santoli

Makeup Artist

Luigi Carpentieri

Producer

Charles Law

Production Supervisor

John M. Farquhar

Assistant Director

Ornella Micheli

Editor

Joseph Goodman

Art Direction

Annette Winter

Hairstylist

Roman Vlad

Music

Franco Fumagalli

Production Design

Jackson McGregor

Sound

Lou D. Kelly

Production Manager

Ermanno Donati

Producer

Raffaele Masciocchi

Director of Photography

Ernesto Gastaldi

Story