scary stories and true crime

The Disappearing Boy (true?)

"A random kid came over the house at 10 p.m. because the children's parents supposedly invited him over to play a board game. Once they finished playing the kids told me that I had to walk the boy to his house. I freaked out because I didn't know anything about him, let alone where he lived. He said he was going to make me take him back, and when I tried calling the parents, it didn't go through. I made him stay the night and every five minutes or so, he walked downstairs to where I was watching TV with a plastic knife and just stared at me.
When the parents came home at about 2 a.m., they said that they had no idea who the kid was. We went upstairs to check on him and he was gone.

Source: Buzzfeed: Babysitting horror stories