A strangler is loose on a British estate, and he not only strangles his victims but brands an "M" onto their foreheads before he decapitates them.
Karin Dor
Claridge Dorsett
Harry Riebauer
Inspector Jeff Mitchell
Ingmar Zeisberg
Judy
Walter Giller
Lord Edgar Blackmoor
Rudolf Fernau
Lucius Clark
Hans Nielsen
Tavish
Dieter Eppler
Anthony, the butler
Hans Reiser
Mike Pierce
Richard Häussler
Dr. Tromby
Albert Bessler
Gärtner Sebastian
Peter Nestler
Tom
Gerhard Hartig
Watson
Carl de Vogt
Doctor
Stephan Schwartz
Philip 'Phips'
Werner Schott
