Florinda Bolkan

Alice Campos / Alice Cespi

Peter McEnery

Henry

Nicoletta Elmi

Paola Bersel / Paula Burton

Klaus Kinski

Professor Blackmann

Lila Kedrova

Mrs. Heim

Caterina Boratto

Boutique Owner

John Karlsen

Alfredo Laurenti / Alfred Lowenthal (as John Carlsen)

Ida Galli

Mary

Miriam Acevedo

Alice's Supervisor (as Myriam Acevedo)

Rosita Torosh

Marie Leblanche (as Rosita Toros)

Luigi Antonio Guerra

(as Luigi Guerra)

Franco Magno

Member of the International Congress (uncredited)

Esmeralda Ruspoli

Feridun Çölgeçen

Hotel Concierge (uncredited)

Bruno Degni

Member of the International Congress (uncredited)

Luigi Bazzoni

Mario Fanelli