Since I was a kid, every night when I had gone to sleep, at my family's house or my house, I heard people chit chatting and laughing but straight from the room. Eventually, there was no party going on. It sounded like a big crowd laughing right from where I was. I got really scare that I had to hid under my blanket. I also have seen shadows of people walking around the room in the night. Creepy as hell. I swear my family was sleeping. The door was locked too. What you think it could have been?