Kim Novak (Lylah Clare/Elsa Brinkmann/Elsa Campbell), Peter Finch (Lewis Zarkan / Louie Flack), Rossella Falk (Rossella), Ernest Borgnine (Barney Sheean), Milton Selzer (Bart Langner), Gabriele Tinti (Paolo), Valentina Cortese (Gräfin Bozo Bedoni), Michael Murphy (Mark Peter Sheean), Lee Meriwether (Junges Mädchen), James Lanphier (1. Reporter), Robert Ellenstein (Mike), Nick Dennis (Nick), Dave Willock (Cameraman), Coral Browne (Molly Luther), Peter Bravos (Butler), Ellen Corby (Script girl), Michael J. Fox (Announcer), Hal Maguire (Legman #2), Queenie Smith (Hairdresser), Sidney Skolsky (Himself), William Aldrich (Assistant M.C.), Danny Borzage (Clown), Robert Cornthwaite (Studio Photo Archivist), Joe Gray (Undetermined Role), John Indrisano (Studio Grip), Kenner G. Kemp (Brothel Patron in Film), George Kennedy (Matt Burke), Dick McAuliffe (Press Party Guest), Dick Miller (Reporter at Press Party), Tom Palmer (Press Party Guest), Hal Taggart (Press Party Guest)