back then, alexander litvinenko was a young fsb agent who claimed to be disturbed by what he saw. crime investigations but became obsessed with what he believed to be corruption within the fsb. crimes committed by the cops. he compiled a dossier, complete with flow charts detailing his allegations and presented it personally to the head of the agency. and the result was? >> opposite. >> reporter: surveillance on your family? >> exactly. >> reporter: an outraged litvinenko now did the unthinkable. he led a nationally televised press conference. a group of agents, several of them in disguise, claiming the fsb had become corrupted by russian mafia money. litvinenko even claimed he'd been ordered to assassinate a prominent billionaire, boris ber zofsky but instead warned him that his life was in danger. >> the essential motivation of this very simple man was his feeling that his country was being betrayed by the leadership. >> he believed he didn't do anything wrong. he was a good officer. >> reporter: and he didn't think it would get him in trouble? >> he said they will kill me or the