When I was a young child (about 4 years old), I had 2 imaginary friends named Cap and Key. I only saw and played with them when I visited my grandmother's house in Attleboro, MA.
It wasn't until I was older when my grandmother told me that I would often get into trouble and blame my friend Key. I would tell her that Cap was good and his brother Key was bad. She also told me that my father and uncles would encounter 2 brothers when they were kids as well. I thought it was interesting so I researched the house and land. The house is built on top of an old swamp and had a gully next to it.
A few years before my grandparents bought the house a car crashed into the gully. There were 2 young boys in the car. The names weren't mentioned, but I am positive that they were the friends I had as a child.
There are also many, many other strange stories I heard from both grandparents and all my aunts, uncles and dad about that house. It was built in the colonial days.
To this day, I am 27 now I still get the feeling of not being alone in that house. And sometimes I can even say that I felt the presence of children. My mother wrote it off as just a child with a vivid imagination, but my grandmother always thought I was playing with the two boys from the car crash. She would often tell me not to go down into the gully, but I always felt something pulling me towards it. Now, as an adult, I go down there all the time to think or just to clean it up (its along Rt. 1 so there's a lot of trash down there.
I never experienced Cap or Key anywhere else besides my grandparents house. And I haven't had any interaction with them in almost 20 years.