. >> or so it seemed, until tony kava took a closer look.cate. >> thousands of photos that liz thought she had deleted. >> one of the pictures we found, it was a chinese symbol that we were able to determine mother, and there were dark lines in the picture. >> dark lines? they looked more closely, those lines were veins and what looked like someone's foot, someone's deceased foot. avis called cari's mom, nancy. >> nancy was able to email a few pictures and sure enough cari has that same tattoo on her left foot. >> wow. >> identical. >> and remember the ying yang tattoo mentioned in one of those possibly confessional emails? >> lo and behold it turns up on a picture? of a dead body? >> yeah. >> holy cow. >> that was cari's too. the tattoo parlor kept a record. >> my first thought when i saw those photographs was, this defendant had taken a trophy your trophies of the person she had killed. >> the motive? a very old one, jealousy. >> it is really all about dave kroupa, she did it because she wanted this man. >> jealousy makes people do strange