>> i tried to help you guys out through this whole thing. you're going to start to cop an attitude -- >> i'm not copping attitude with you but i'm having trouble with some of the stuff you're saying. >> i know my word doesn't mean [ bleep ]. i was a felon, a drug addict. everybody knows about it. i put up with a lot of [ bleep ]. >> so this must have put a whole different complexion on paul. >> it did. >> reporter: having thought for some time maybe peter was your guy. what was that like? >> it's possible we may have somebody else to look at. >> reporter: and indeed they did. attached gps trackers to both peter and paul's vehicles, which produced precisely nothing. more weeks slipped by. eduardo ayala, aware he and his family could be the killer's next target, lay awake at night thinking. >> i would imagine peter trying to build this bomb. had to do it on a work bench obviously but he's got the