Karin Dor as Gwendolin Harald Leipnitz as Inspector Bratt Siegfried Lowitz as Sir Richard Siegfried Schürenberg as Sir John Ilse Steppat as Lady Patricia Dieter Eppler as William Hartmut Reck as Ronny Kurt Waitzmann as Cunning Rudolf Schündler as Mr. Short Kurd Pieritz [de] as Monsieur d'Arol Uta Levka as Lola Dunja Rajter [de] as Dolores Susanne Hsiao [de] as Mai Ling Uschi Glas as Mary Eddi Arent as Pedell Smith Walter Echtz as Mr. Smith / Monk Erik Radolf [de] as Servant Wilhelm Vorwerg as Notary