The left for his brother. go it was a big motivating factor. >> but, david also had some provocative information. something that jack told him after arguing with sandra about moving to arizona. >> if anything ever happens, to me he says, not the only time jack said such a thing. >> he actually told me, i wouldn't be surprised if he killed me. i wouldn't, he said that. , dog pick to the original, files hoping that he might come across something that had been overlooked. and buried inside, he found this. a simple, two-page report apparently unread by any detective. remember the guy who walked in...