Princess Asa Vajda / Katia Vajda
Barbara Steele
Dr. Andrej Gorobec / Dr. Andreas Gorobec
John Richardson
Boris - Stablehand
Renato Terra
Sonya - Innkeeper's Daughter
Germana Dominici
Narrator (voice) (uncredited)
Nando Gazzolo
Dr. Choma Kruvajan / Dr. Thomas Kruvajan
Andrea Checchi
Prince Vajda
Ivo Garrani
Igor Javutich / Javuto
Arturo Dominici
Prince Constantine Vajda
Enrico Olivieri
Priest
Antonio Pierfederici
Ivan - Manservant
Tino Bianchi
Inn Keeper
Clara Bindi
Nikita - Coachman
Mario Passante
Director of Photography
Mario Bava
Special Effects
Director
Matte Painter
Short Story
Nikolai Gogol
Screenplay
Ennio De Concini
Producer
Massimo De Rita
Editor
Mario Serandrei
Original Music Composer
Roberto Nicolosi
Unit Manager
Paolo Mercuri
Set Decoration
Nedo Azzini
First Assistant Director
Vana Caruso
Costume Design
Tina Grani
Executive Producer
Lionello Santi
Conductor
Luigi Urbini
Production Secretary
Armando Govoni
Production Design
Giorgio Giovannini
Script Supervisor
Bona Magrini
Camera Operator
Ubaldo Terzano
Sculptor
Eugenio Bava
Gaffer
Antonio Rinaldi