moore. >> reporter: paul, pete's beloved cousin, the handsome golden boy of the pair told the detective he found something out at the scene of the accident, something that shouldn't have been there. >> he came across a piece of metal that he found. it looked like galvanized iron or some kind of galvanized metal. and that piece of metal said to him that there was something more going on. >> reporter: did he have any other ideas about what may have happened? >> he did. he told us his cousin pete had made some threats toward the victim in the time leading up to the incident. >> reporter: and there was more. paul showed detective psalm texts he received from peter sent from the very rice field where roberto was killed. >> that text was dated and timed the day before. coming up, the focus shifts from the nuts and bolts of electrical explosions to an explosive personality. >> he was always the one that had something mean to say. he was always the one that hated him. that was the only person i could think of. >> why did you hate him? >> he was arrogant. he flaunted stuff in my face. >> pete had a reputation for being a real hothead.