really shot her. a truly shocking idea. something beyond devious. >> she shot herself, is what i thought. >> reporter: liz shot herself? that sounded crazy. or maybe, a certain kind of crazy. remember to help catch cari farver, liz had given the police her cell phone. and here's what detectives doty and avis found on that phone. a photo of cari farver's s.u.v., which didn't make any sense at all because -- >> we looked at the date that was taken. and it was taken on christmas eve of 2012. >> reporter: wasn't that when her car was actually missing? >> yeah, it hadn't been recovered till january of 2013. >> uh-huh. >> so, we thought that's -- that's weird that the police couldn't find it. dave didn't know where it was, but somehow liz was able to [ bleep ] take a picture of it. >> reporter: but that wasn't all. remember that threatening photo cari emailed to dave, of a woman