Half of this story is true, but the other half I am not quite sure. I only heard what was told to me. Credible or not, judge for yourself..
It was about 11 years ago, my family and I moved in a suburb just outside of New Orleans, LA. Three years prior to our move-in there was a house (two house away from mine) occupied by an old couple who had a grandson that suffered from mental retardation. His name was Billy. Billy was a very violent kid. He used beat up on the neighbor's kids and chase them around with a butcher knife. One time he slashed a little boy with it and sent the boy to the hospital. The boy suffered from massive bleeding but luckily survived.
One stormy night, my friend, "Mary" glanced at her bedroom window and found Billy standing there with the butcher knife in his hand and naked. Needless to say, she was scared out of her wits. She screamed from the top of her lungs. This startled Billy so he ran away quickly into the rainy night. Just hours later an ambulance siren was heard all over the neighborhood. Billy had been accidentally hit by a truck around the corner of the street. His lifeless body lay naked on the wet concrete street with the knife still in a tight grip. He was taken to the hospital in critical condition and was later pronounced dead. Billy was only 12 years old. The neighbors mourned and Billy's grandparents were heart stricken. Shortly after the tragic event, the old couple moved away.
A year had gone by and the house remained unoccupied. Rumors had it that Billy's ghost haunted the place. Sometimes late at night, particularly on stormy nights, his ghost could be seen standing at his bedroom window naked holding the butcher knife. Mary claimed she saw him while walking by his house one late evening. He looked exactly the same way he did on that one fatal night. His skinny, naked body standing stiff, holding the large cleaver in his left hand gazing at her with dark piercing eyes, like a psycho maniac. With just a blink of an eye he was gone.
One day a family moved into the house. The neighbors tried to keep the rumors from the new occupants in fear that they would scare the family's kids. One rainy night while home alone watching TV in the living room, 16-year old, "Amanda" heard a loud crash in the kitchen. What she found was a butcher knife lying in the center of the kitchen floor. Strangely, the draw of which all the knives were kept was closed. It was though someone had placed the knife right at the center of the floor and not have fallen directly under the draw.
Another occurence is when little 10-year old, Jimmy (the family's son) woke up one morning with unexplainable bruises on his face. There were four marks running diagonally down on the left side of his face. It's like he was slapped hard and had finger bruises. The family had gotten the idea of an unseen, violent force residing in the house and moved away shortly after.
It was about 8 months after we moved into the neighborhood that the next occupants took up the place. I don't think they had any ghastly encounters for they resided in the house for over 10 years. As for me, I did not notice anything strange about it. But, sometimes I would get extremely frightened when walking by it at night and thinking about Billy.