This is a quite cool British mystery movie based on E. Wallace mystery. It has got everything you want from this kind of movie - an old house (in this case with a tomb and museum of torture), a lot of fog, bizarre villains, mute servant and of course a damsel in distress. She is played by Lili Palmer. The villains tie her up and lock her in the tomb. She is gagged with a rag tied over her mouth and even nose. She manages to loosen her wrists but not to free her hands and take her gag off and she starts to scream for help but no-one hears her. In the end she is found half-unconscious and rescued from the tomb.