Barbara Steele

Princess Asa Vajda / Katia Vajda

John Richardson

Dr. Andrej Gorobec / Dr. Andreas Gorobec

Ivo Garrani

Prince Vajda

Arturo Dominici

Igor Javutich / Javuto

Enrico Olivieri

Prince Constantine Vajda

Andrea Checchi

Dr. Choma Kruvajan / Dr. Thomas Kruvajan

Antonio Pierfederici

Priest

Tino Bianchi

Ivan - Manservant

Clara Bindi

Inn Keeper

Mario Passante

Nikita - Coachman

Renato Terra

Boris - Stablehand

Germana Dominici

Sonya - Innkeeper's Daughter

Nando Gazzolo

Narrator (voice) (uncredited)