>> yes. >> reporter: i mean, he's the guy who discovers this violent criminal act, and you wonder if he knows more than he's saying. >> oh, definitely. >> reporter: they pressed him to find out more about just what work he was to do there, and whether he had worked for kay parsons before. >> did you have the key -- have the door open to the house? to do the work? >> well, we -- we was mostly outside. the only time that we was really on the inside is when she called me up and said, i need a little bit fixed on the inside. >> reporter: you had the bad luck of being the person to find this. >> yeah. yeah. yeah. >> reporter: so, that put you on the list also, mitch, of -- >> sure. sure, yeah -- >> reporter: people they want to get a full story from. >> exactly. >> reporter: maybe with some sharp questions, huh? >> yeah, exactly. i knew better to walk in that house, you know, because i did not want anything -- my fingerprints anywhere in that house because i just, you know, watched enough tv to know better. >> reporter: what'd you -- what'd you see in him in terms of demeanor? >> he seemed pretty genuine to me. he was pretty shaken up. >> reporter: so investigators knocked the contractor off their list but in his interview he helped point them to someone else, that boy on the rock. >> then i seen that boy sitting, the next-door neighbor sitting down on a rock across the street