Mary arrives in Berlin from Canada to visit her nephew Max and meet his twin daughters that she has been amply supporting financially. But Max has cheated: There is only one daughter Inge who has to enact both girls to cover up the mess.
| Actor | Role |
|---|---|
 Charlott DaudertInge Bauer / Ursula Bauer | Inge Bauer / Ursula Bauer |
 Ralph Arthur RobertsMax Bauer | Max Bauer |
 Adele SandrockTante Mary | Tante Mary |
 Jack TrevorGeorge | George |
 Kurt VespermannManager | Manager |
 Grethe WeiserRita Cornelli | Rita Cornelli |
 Elena LuberNot listed | Not listed |
| BBókay FerencErik | Erik |
 Paul WestermeierFranz Tanneberg | Franz Tanneberg |
| GGaston BrieseSchlaupe, Portier | Schlaupe, Portier |
| GGerdi GerdtZofe | Zofe |
| EErich BartelsNot listed | Not listed |
| PPaul Ludwig FreyNot listed | Not listed |
| LLilo HartmannNot listed | Not listed |
| CCharlie KrackerKavalier an der Bar | Kavalier an der Bar |
| RRudolf van der NossNot listed | Not listed |