The Trygon Factor, its title totally meaningless, is a complicated Scotland Yard whodunit which the spectator will find taxing to follow.
Stewart Granger, as the Yard superintendent investigating a rash of unsolved robberies, is assigned to a large country house where a gang is operating under the cloak of respectability; its mistress, a member of an old English family who has turned to crime to save her family estate from ruin.
She has installed in her house a phony order of nuns who actually are in on the various crimes, and who receive and ship stolen goods to Morley’s warehouse.
Script is pocketed with story loopholes and attempts to confuse, plus certain motivations and bits of business impossible to fathom.
Granger still makes a good impression.