The Whistle Blower

English patriot and army vet Frank (Caine) is only mildly concerned when his son Bob, who works for the British Secret Service, says dirty dealings are afoot at the agency. But then Bob is murdered under mysterious circumstances. And Frank's inquiries thrust him in the middle of a rat's nest of government deceit that reaches up through the ranks to a traitorous spy (Gielgud) whose secret could now cost Frank his own life as well! (official distributor synopsis)