Onder andere met: Mark Damon (Richard Barrett), Eleonora Brown (Lucille), Michael Rennie (Inspector Durand), Sally Smith (Jill), Patrizia Valturri (Denise), Ludmila Lvova (Mrs. Clay), Luciano Pigozzi (La Floret (as Alan Collins)), Franco De Rosa (Detective Gabon (as Franco Derosa)), Vivian Stapleton (Miss Transfield (as Vivienne Stapleton)), Ester Masing (Miss Martin), Aldo De Carellis (Professor Andre), Giovanni Di Benedetto (Di Brazzi (as John Hawkwood)), Valentino Macchi (Policeman), Umberto Papiri (Simon), Caterina Trentini (Betty Ann (as Katleen Parker))