it can happen here because it happened to my husband. >> reporter: there's no proof the joyals are right, but paul's been caught. and elizabeth joyal admits at first she was angry when he agreed to be interviewed again for this program. >> i said, what are you thinking? why do you want to bring notice once again? but then when the man in russia was shot, i had a kind of an epiphany. wait a minute. someone needs to talk about this. someone needs to say this is not right. >> reporter: can i ask you an obvious question? why are you still doing this? why are you talking to me now, against -- >> against the advice and counsel of my family? well, it may be foolish, but i think it's the right thing to do. >>> the back of the house is fire. >> a father dead in the flames, but it wasn't the fire that killed him. >> it was actually a murder. >> three murders in one year. all covered up by fires.