Police battle against a gang of blackmailers known as The Crimson Circle.
Thalia Drummond
Jack Birdmore
Derrick Yale
Froyant
Inspektor Parr
Marl
Diener von Marl
Birdmore
Ministerpräsident
Eine Vermieterin
Milly
Kriminalkommissar
Pfandleiher
Zofe
Director
Writer
Novel
Producer
Music
Director of Photography
Art Direction
Assistant Director
