Fourth Protocol (Blu-ray)

British spy John Preston (Michael Caine), recently demoted by his superior for a well-meaning but unauthorized mission, stumbles upon a secret plan devised by KGB agent Valeri Petrofsky (Pierce Brosnan) to build and detonate a nuclear bomb on British soil and blame it on the Americans. With the support of the ailing MI5 director, Preston, still at odds with several of his superiors, tries to uncover and thwart the plot before it's too late.