Having sought asylum at London Airport, Soviet bloc nuclear physicist Boris Turganev (Stephen Murray) was soon continuing his research under British government auspices. However, is the brilliant scientist truly a grateful defector...or is he a mole feeding secrets back to Moscow? Clever espionage story that will keep you guessing also stars June Thorburn, John Carson, Alan Wheatley, John Bown. 70 min. Standard; Soundtrack: English.