Police battle against a gang of blackmailers known as The Crimson Circle.
as Thalia Drummond
as Jack Birdmore
as Derrick Yale
as Froyant
as Inspektor Parr
as Marl
as Diener von Marl
as Birdmore
as Ministerpräsident
as Eine Vermieterin
as Milly
as Kriminalkommissar
as Pfandleiher
as Zofe
