The Strangler of Blackmoor Castle (German: Der Würger von Schloß Blackmoor) is a 1963 West German thriller film directed by Harald Reinl and starring Karin Dor, Harry Riebauer and Rudolf Fernau. It was based on a novel by Bryan Edgar Wallace and was part of a trend of English-set thrillers inspired by Rialto Film’s series of adaptations of his father Edgar Wallace’s work.

It was shot at the Spandau Studios in Berlin. The film’s sets were designed by the art director Werner Achmann.

Cast
Karin Dor as Claridge Dorsett
Harry Riebauer as Inspector Jeff Mitchell
Rudolf Fernau as Lucius Clark
Hans Nielsen as Tavish
Dieter Eppler as Anthony, the Butler
Hans Reiser as Mike Pierce
Richard Häussler as Dr. Tromby
Walter Giller as Edgar
Ingmar Zeisberg as Judy
Peter Nestler as Tom
Gerhard Hartig as Watson
Albert Bessler as Sebastian, the Gardener
Carl de Vogt as Doctor
Stephan Schwartz as Philip as ‘Phips’