American students, Tommy and Annette, find themselves in a heap of trouble when they accidentally discover an art forgery ring in Florence, Italy.
| Actor | Role |
|---|---|
 Tommy KirkTommy Carpenter | Tommy Carpenter |
 Annette FunicelloAnnette Aliotto | Annette Aliotto |
 Nino CastelnuovoBruno | Bruno |
 Clelia MataniaAunt Gisella | Aunt Gisella |
| CCarlo RizzoUncle Mario | Uncle Mario |
 Ivan DesnyCount Roberto | Count Roberto |
 Venantino VenantiniLorenzo | Lorenzo |
 Ivan TriesaultProfessor Levenson | Professor Levenson |
 Odoardo SpadaroPadrone | Padrone |
 Renzo PalmerCarabiniere | Carabiniere |
| RRichard WatsonButler | Butler |
| HHelen StirlingMiss Brooks | Miss Brooks |
 Elisa CeganiFelicia | Felicia |
 Liana Del BalzoCountess Della Scala | Countess Della Scala |
| GGeorge EhlingGino | Gino |