Anita Ekberg

as Sister Gertrude

Joe Dallesandro

as Dr. Patrick Roland

Alida Valli

as Mother Superior

Massimo Serato

as Dr. Poirret

Daniele Dublino

as Director

Paola Morra

as Sister Mathieu

Lou Castel

as Peter

Laura Nucci

as Baroness

Alice Gherardi

as Nurse

Lee De Barriault

Ileana Fraia

as Florence

Antonietta Patriarca

Sofia Lusy

as Janet

Nerina Montagnani

as Josephine

Franco Caracciolo

as Priest in Confessional

Maria Sofia Amendolea

Chicca Thomas

Manlio Pierotti

Brunello Chiodetti

as Sister Gertrude's Lover

Enzo Spitaleri

Lesly Thomas

Aldo De Franchi

Carolyn De Fonseca

as Sister Gertrude (voice) (uncredited)