she'd be paying people off. >> reporter: the sheriff believes tiffany's story and his sources and witnesses confirm it. you don't believe the hartleys were involved in drugs? >> no. >> you don't believe there is an insurance scam going on? >> where's the body? >> reporter: you don't believe tiffany hartley herself may have executed her husband. >> i don't think so. >> reporter: and now even more evidence tiffany hartley is telling the truth. a surveillance photo taken that very afternoon, one hour after the attack. >> if you notice there on the front of the boat, you see bundles of marijuana there. >> reporter: it shows a small boat and a group of men, one in a green shirt, one shirt black, fitting the description given by tiffany hartley, and what gonzalez says is a bale of marijuana in the bow. it's information the mexican authorities have had since the very first day. >> reporter: sheriff, i've got to ask you, is that possible that mexico is going to find, catch and adjudicate the killers in what is a lawless part of