Trailer
 | Otto Gebühr as Prof. Dr. Ernst A. Gruber |
 | Sybille Schmitz as Susanne Gruber |
 | Cornell Borchers as Ellen Gruber |
 | Will Quadflieg as Harry Altenberger |
 | Hans Leibelt as Martin Altenberger |
 | Ewald Balser as Dr. Thomas Robertsen |
 | Rolf Moebius |
 | Hans Paetsch |
| Directing | |
| Gustav Fröhlich | Director |
