THE STRANGLER OF BLACKMOOR CASTLE is one of the best of the German krimis I've watched, this one based on the works of Bryan Edgar Wallace. The story is relatively straightforward: a masked killer prowls the corridors of Blackmoor Castle, searching for a stash of hidden diamonds and ready to strangle anyone who gets in his way.
Veteran director Harald Reinl uses the opportunity to deliver a film that's loaded with atmosphere, murder and action. The killer, who has a penchant for beheading his victims, is truly a sinister creation and the scenes of him prowling through dimly-lit corridors are hugely atmosphere. Some of the set-pieces provide bizarre highlights, such as the motorcycle beheading, and there's even some fisticuffs to keep the story bubbling along.
The cast acquit themselves well enough that the viewer is able to distinguish some solid performances despite the atrocious English dubbing. Regular Scream Queen Karin Dor headlines but the statuesque Ingmar Zeisberg wins most of the attention as a scheming barmaid. There are red herrings galore, dogged detectives and intrepid reporters, everything you'd want from a good murder mystery. Add in some broad comedy involving a kilt-wearing "lord of the manor" who's got an obsession for birdsong and you have a great little movie overall.