When I was younger, around 3, my dad was walking our dog in a park. My dad's side of the family has always been sensitive to ghosts and such, so he could tell something was following him, but he didn't put much thought into it, thinking it was just curious about the dog or something. When he got home, he had pretty much forgotten about.
About 2 weeks later, my mom started complaining about feeling something in the basement, and a shadow on the wall following her on the walls, one that wasn't her shadow. And sure enough, soon I started hanging out with a little girl named "Samantha" or something. For a few weeks we played peacefully, and my dad didn't care. But one day I started jabbering about how Samantha said she was going to burn our house down.
My dad was worried, obviously, that she might be a harmful spirit. So he went down to the basement to talk to her, and as he did, he started to feel something behind him. He turned around, and a little girl of about 7 was behind him. She looked perfectly normal, but she had "fire" around her. I say "fire" because it wasn't really there, more like a ghostly image. She looked angry and walked off into the furnace room (yeah, yeah, I know, how stereotypical). My dad was mad and concerned at this point and forced the spirit out of the house. For a little while, I was sad, but I got over it pretty quickly.
Does anyone think this was more than a wandering spirit? Perhaps it was something eviler?
To give you an idea of our basement, one half was the garage, and the stairs were in the middle, it was unfished. So you walk down the stairs, and you are facing the outermost wall. The garage is on your right, and a regular basement is on your left. In the back of the regular basement was an odd store-room that was always cold, a furnace room, and other little utility closets.
As a child, I was fine with going into the basement alone, but never went to the second floor alone, the only time I went up there was with the cat or another person. I often had nightmares and was deathly afraid of the closet upstairs. The reason this is important is that I was fine with going up there with Samantha, so it wasn't just a childish fantasy, she was real, or I wouldn't go up there. I have had more imaginary friends, but I'll save them for another story.