Barbara Steele

Harriet Montebruno / Belinda

Anthony Steffen

Roberto Merigi

Claudio Gora

Conte Montebruno

Mario Brega

Carlo Lionesi

Marina Berti

Ilda, the Housekeeper

Ursula Davis

Rita

Vassili Karis

Dario, the Teacher

Aldo Berti

Vittorio, the Gardener

Betty Delon

Barbara Lionesi

Antonio Corevi

Guglielmo, the Majordomo

Antonio Acqua

Sergente, the Guardian

Livia Rossetti

Natalia

Halina Zalewska

Luisa

Giovanna Lenzi

Maria

Bruno Ariè

Man in Tavern (uncredited)

Camillo Mastrocinque