still to find the body, and they don't have a body. >> a few months before the trial, ryan avis and tony kava last few times we talked to him, he always said, no, he couldn't think of anything. >> for some reason, dave remembered he had a tablet that was in storage for the past couple years. >> it had been in a box for i don't know how long, a year and a half, probably. and i don't even know why i thought about it. >> when i examined the tablet, it had a micro sd card in it. and that memory card, it looked blank. if you plugged it into your computer it would look like there was nothing there, but there was deleted information. >> that sd card, it turns out it had been in liz's phone. >> and it had thousands and thousands of deleted images that she thought were gone. but we were able to retrieve them. >> there were selfies that liz had taken. there was everything that you would normally have on your cell phone. but then i came to a photo that no one had seen before. it was reddish, and i wasn't sure what i was looking at first, but it turned out to be a human foot. a human foot with a tattoo.