Cast
- Lola Müthel as Inge Flint, Cheflaborantin
- Hans Zesch-Ballot as Benken, Kriminalkommissar
- Jaspar von Oertzen as Dr. Berthold Mahr
- Albert Lippert as Harry Hornemann, Kaufmann
- Roma Bahn as Frau Duval
- Jack Trevor as Percy Duffins
- Edith Meinhard
- Lotte Rausch as Grete
- Georg H. Schnell