that fall, ronnie gaskins interviewed each girl repeatedly. how was sheila's demeanor in these meetings you would have with her? >> calm. collect. would look at you right in your face, right in your eyes. >> he says rachel seemed distracted. >> she would draw on the desk, play with the pencil. just her nonverbal cues spoke a lot. >> their story never varied. they picked skylar up, drove around morgantown, smoked a little pot, and dropped her off a few blocks from home. >> it was like a recording with these two. >> in the meantime, the officers had begun to collect physical evidence, and it didn't match up with the story the girls had been telling. surveillance video from a convenience store put the girls'car not heading east as they had said, but heading west towards blacksville. and the girls'phone records from that night showed rachel's phone pinging off a cell tower in blacksville. >> that was an aha moment. finally, we have something to go on that's different from their story. >> now even skylar's parents joined the chorus of people trying