When registering in a Berlin hotel, the beautiful Lilian realizes that she apparently has a doppelganger: She is arrested as a wanted jewel thief. Lilian decides to find the woman who is preparing her next coup in Nice.
| Actor | Role |
|---|---|
 Lilian HarveyLilian von Trucks / Yvette Demoulin | Lilian von Trucks / Yvette Demoulin |
 Harry HalmLeopold | Leopold |
 Willy FritschErik Termeulen | Erik Termeulen |
 Sig ArnoPaul | Paul |
 Warwick WardRoger | Roger |
 Hermann SpeelmansEmil | Emil |
 Wilhelm Bendowjeweler Burggraf | jeweler Burggraf |
 Max Ehrlichreceptionist | receptionist |
 Paul BiensfeldtKommissar in Berlin | Kommissar in Berlin |
 Julius FalkensteinKommissar in Nice | Kommissar in Nice |
 Karl Platennight porter | night porter |