The honest Professor Weber sees his happy family life at risk when a young man appears.
| Actor | Role |
|---|---|
 Theo LingenProf. Waldemar Weber | Prof. Waldemar Weber |
 Walter MüllerFritz Pappenstiel | Fritz Pappenstiel |
| IIngrid LutzNot listed | Not listed |
 Paul WestermeierGeheimrat Theodor Nathusius | Geheimrat Theodor Nathusius |
 Adrian HovenDr. Kurt Wehling | Dr. Kurt Wehling |
 Erna SellmerFrau Lange | Frau Lange |
| RRuth LommelHelga Lüders | Helga Lüders |
 Grethe WeiserMathilde | Mathilde |
 Ingrid PanOlga | Olga |
 Friedl HardtAnni | Anni |
| EElse RevalFrau Direktor Funk | Frau Direktor Funk |
| WWerner MüllerBand | Band |
 Wolfgang NeussNot listed | Not listed |