The Trygon Factor (1966) — crime film. Directed by Cyril Frankel. Starring Stewart Granger, Susan Hampshire, Cathleen Nesbitt, James Culliford.
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Crime · 6.5/10 · 88 min · 1966
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.
Related entry on Wikidata (Q834168), public domain (CC0).