Don Giuliano Niccolini Borges, Roman prince and member of the Pontifical Noble Guard, is very much attracted to Jane, an English girl accompanying him on a pleasure trip to Switzerland. He has plans for hanky-panky along the way, but Jane has her own motives as she's only with him because his car has a special-identification license plate and can go through customs without inspection.
| Actor | Role |
|---|---|
 Vittorio GassmanGiuliano | Giuliano |
 Joan CollinsJane | Jane |
 Jacques BergeracSandro | Sandro |
| HHilda BarryDana | Dana |
| DDino CurcioSalerno | Salerno |
| AAldo De CarellisEduardo | Eduardo |
 Pippo StarnazzaFrancesco | Francesco |
| AAlfredo MarchettiNot listed | Not listed |
 Halina ZalewskaLuisetta | Luisetta |
 Ugo FangareggiNot listed | Not listed |
| MMaurice RosembergNot listed | Not listed |
 Renato MontalbanoDino | Dino |
 Paolo BonacelliZenone | Zenone |
 Marino MaséAngelo | Angelo |
| AAdolfo EisensteinNot listed | Not listed |