but -- i thought it was a shadow. >> did you actually see a shadow or did you tell the police you thought it was a shadow? >> it was a movement, like a shadow that left. >> she tried to follow the intruder down the hallway. she was worried about the safety of the children. she returned back to her bedroom. that's where she made the 911 call. >> the children. joan and david's eldest daughter daisy was out of town. but their two young boys, just 7 and 10, slept through it all, unaware of what happened. down the hall was shannon's 15-year-old daughter elizabeth, who told the cops she was also in bed, and spending the night with liz was her best friend vera thompson, also just 15. >> both their statements were similar. they were listening to music, watching tv, and they fell asleep. >> five people in the house, and not a one saw or heard a useful thing to help determine who