it can happen here because it happened to my husband. >> reporter: there's no proof the joyals are right, but paul'shave never been caught. and elizabeth joyal admits at first she was angry when he agreed to be interviewed again for this program. this wasn't just symbolism. in march 2006, eight months before litvinenko's murder, the russian parliament passed a law authorizing the liquidation of enemies of the state anywhere in the world. >> it's four days after i accused the president of being responsible for the -- the horrible murder of litvinenko on your network. >> reporter: in early 2007, joyal appeared in a "dateline" report on the litvinenko case. he blamed vladimir putin for the murder. just four days later he was almost murdered himself. you think they were related? >> i don't think there's any doubt. >> people out in the general public say, oh, that's in russia. it's never going to happen here. but i know that it could happen here, too. i know that it can happen here because it happened to my husband. >> reporter: there's no proof the joyals are right, but paul's sailents have never been c