TRYGON FACTOR (1966)

SCOTLAND YARD SUPERINTENDENT COOPER-SMITH INVESTIGATES THE SUSPICIOUS LOOKING EMBERDAY ESTATE WHERE THE EMBERDAY FAMILY AND AN ORDER OF NUNS RESIDE. STARRING STEWART GRANGER, SUSAN HAMPSHIRE, ROBERT MORLEY, JAMES CULLIFORD, SOPHIE HARDY, JAMES ROBERTSON JUSTICE, ALLAN CUTHBERTSON.