Credits
Cast

Barbara Steele
Helen Rochefort / Mary

George Ardisson
Baron Kurt Humboldt

Halina Zalewska
Adele Karnstein / Lisabeth Karnstein

Umberto Raho
Von Klage

Laura Nucci
Grumalda

Giuliano Raffaelli
Count Humboldt

Nello Pazzafini
Monk
Jeffrey Darcey
The Messenger
Art
Giorgio Giovannini
Art Direction
Henry Fraser
Set Decoration
Camera
Riccardo Pallottini
Director of Photography
Costume & Make-Up
Humphrey Patterson
Costume Design
Florence Clark
Hairstylist
Edmund Stroll
Makeup Artist
Directing

Antonio Margheriti
Director, Screenplay
Editing
Mario Serandrei
Editor
Production
Felice Testa Gay
Producer
Sound

Carlo Rustichelli
Original Music Composer
John Tamblyn
Sound
Writing

Tonino Valerii
Screenplay, Dialogue

Ernesto Gastaldi
Story