The Trygon Factor
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.
Genre: Crime
Cast: Stewart Granger, Susan Hampshire, Cathleen Nesbitt, James Culliford, Brigitte Horney, Robert Morley, Sophie Hardy, Colin Gordon, Eddi Arent, Diane Clare, Allan Cuthbertson, Caroline Blakiston, Richardina Jackson
Crew: Horst Wendlandt (Producer), Cyril Frankel (Director), Stanley Munro (Screenplay), Edgar Wallace (Novel), Derry Quinn (Screenplay)