 Patric KnowlesPrince Rupert Heinrich Franz Von Rentzau | Prince Rupert Heinrich Franz Von Rentzau |
 Beverly RobertsLaurine Lynne | Laurine Lynne |
 Allyn JoslynJoe Craig | Joe Craig |
 Gordon OliverRicky Preston | Ricky Preston |
 Vladimir SokoloffHerr Andrew Brenner | Herr Andrew Brenner |
 Eula GuyTrommy, Laurine's Maid | Trommy, Laurine's Maid |
 Fritz FeldHerr Meyer, Hotel Director | Herr Meyer, Hotel Director |
 Ann CodeeMaria | Maria |
 George HumbertGiovanni | Giovanni |
 Otto FriesFranz, Buggy Driver | Franz, Buggy Driver |
 Sam AshReporter | Reporter |
 Glen CavenderAustrian Policeman at Jail | Austrian Policeman at Jail |
 Gino CorradoAustrian Hotel Staff Member | Austrian Hotel Staff Member |
 Lester DorrReporter | Reporter |
| EEddie GrahamPhotographer at Polo Game | Photographer at Polo Game |
 Stuart HolmesCastle Servant at End | Castle Servant at End |
 Don MarionBusboy | Busboy |
 Frank MayoMotion Picture Director | Motion Picture Director |
 Jack MowerFrederick, Elevator Operator | Frederick, Elevator Operator |
| SSandra RamoyReporter | Reporter |
 Janet ShawTelephone Operator | Telephone Operator |
 Rosella TowneBrenner's Receptionist | Brenner's Receptionist |
 Jeff YorkAnnouncer at Polo Game | Announcer at Polo Game |
 Robert FischerJoseph, Rupert's Servant | Joseph, Rupert's Servant |
| RRaoul FreemanReporter (uncredited) | Reporter (uncredited) |
