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)
                                    Feridun Çölgeçen
Hotel Concierge (uncredited)
Bruno Degni
Member of the International Congress (uncredited)
                                    Lidia Zanussi
Member of the International Congress (uncredited)
                                    Luciano Zanussi
Member of the International Congress (uncredited)
Les traces
Released