Detectives hope the children heard something that will help identify Michael's killer,...

narrator: Detectives hope the children heard something that will help identify Michael's killer, but surprisingly, both report they didn't hear a peep the night before. How could someone have entered the Grant residence and committed this vicious attack so quietly? - Being that the house was actually rather large, it's possible that the stabbing took place without much noise. The locks were all locked in the house, as if nobody had busted in through a door or a window. Everything was secured. So it led me to believe that whoever was in that house and committed this homicide had keys to the house