Two police inspectors track down a mysterious criminal who signs his crimes with a fiery triangle. When they have just discovered an accomplice, one of the police officers, in love with the young girl, is shot dead. His colleague will then have only one goal in mind.
| Directing | Edmond T. Gréville | Director |
| Directing | Johannes Guter | Director |
| Writing | René Wild | Screenplay |
| Writing | Jean de Letraz | Screenplay |
| Camera | Eduard Hoesch | Director of Photography |
| Sound | Casimir Oberfeld | Music |