A Scotland Yard detective is investigating a string of robberies and a murder, and the information he uncovers leads him to the estate of a wealthy but strange English family, who share their mansion with a group of nuns. The detective comes to suspect that neither the family nor the nuns is quite what they seem to be.
Horst Wendlandt | Producer |
Cyril Frankel | Director |
Derry Quinn | Screenplay |
Stanley Munro | Screenplay |
Edgar Wallace | Novel |
Oswald Hafenrichter | Editor |
Harry Waxman | Director of Photography |
Ian Warren | Executive Producer |
Peter Thomas | Original Music Composer |
Roy Stannard | Art Direction |