speculation began to swirl that tiffany hartley killed her husband for insurance money or even that tiffanyg another man. >> people still have a hard time believing you. does that hurt you? >> some days. other days -- they don't have room to judge. i mean, they don't know me. they don't know my husband. they weren't there that day. so really they have no room to judge me. >> reporter: with television and newspaper attention still at viral levels, authorities in texas were trapped. they could dispatch all the boats and helicopters they wanted, but law enforcement in mexico was still in charge. and what happened next in mexico showed just how difficult getting any answers would be. >> one mexican detective did try to find out what happened to david hartley. but his head was severed from his body and his decapitated head was delivered to the mexican army here in a border town. his name, rolando viegas. his suspects, brothers who lived near the half submerged church in mexico, old guerrero. it's unclear if he went looking for them, but only a few days after he identified the brothers by name, t