A gripping drama chronicling the true story of the detection of one of the greatest spy scandals in US history; young FBI wannabe Eric O'Neill is assigned to keep an eye on the veteran analyst, devout family man and cookie Christian Robert Hanssen, whose crimes, he is told, are probably merely a rapacious appetite for pornography. "Breach" relies more on the depth of story and the subtleties of honest acting, Cooper excels as the unknowable and reptilian analyst, than a breakneck pace and explosive action.