a young couple living in a large house, had gone out to a dinner party one evening. The couple had left their babysitter in charge of their two children at the house. With the children already in bed, she decided to go into the living room and watch some television for a while. As she was about to get comfortable on the couch, the phone rang. As she picked up the reciever, all she heard was a man laughing menacingly, and a voice that said " I'm upstairs with the children, you'd better come up. Thinking it was a prank phone call or someone just trying to scare her, she slammed the receiver down and turned up the television. A few minutes later the phone rang again. As she picked it up, she could her the unmistakable laughter coming over the phone line. She then heard the man say, once again, " I'm upstairs with the children, you'd better come up. Getting very frightened and worried, she hung the phone up. Not knowing what to do, the babysitter calls the operator. The operator tells her that they would notify the police and, should he decided to call again, to keep him talking in order to give the police time to trace the call. Only a few minutes after she finished talking with the operator, the phone rang again. It was the voice again. After he said, "I'm upstairs with the children, you'd better come up," she tried to stall him by asking why he was doing this to her. However, he must have guessed what she was trying to do and he hung up the phone on her. Only seconds later the phone rang again. This time it was the operator, who said, "Get out of the house right now, we traced the call and its coming from the upstairs phone. The man is in the house with you.". The baby-sitter dropped the phone and, at the same time, heard someone running down the stairs. She fled from the house and ran straight into the arms of the police. The police burst into the house and found a man brandishing a large butcher's knife. The man had broken in through one of the windows upstairs. He murdered both of the children while they slept, and was just about to do the same to the babysitter when the police arrived