Police battle against a gang of blackmailers known as The Crimson Circle.
Lya Mara | Thalia Drummond |
Fred Louis Lerch | Jack Birdmore |
Stewart Rome | Derrick Yale |
Albert Steinrück | Froyant |
John Castle | Inspektor Parr |
Otto Wallburg | Marl |
Hans Albers | Diener von Marl |
Hans Marlow | Birdmore |
Otto Treßler | Ministerpräsident |
Ilka Grüning | Eine Vermieterin |
Annie Ann | Milly |
Bruno Ziener | Kriminalkommissar |