>> 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 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 committed this horrible crime, or why. and there weren't many clues