This happened when I was about 8 years old so it would have been around 1977. A friend of my brother's had just been killed in a car accident and I was having a nightmare about her. I awoke and was startled to find people standing in my room.
There were two beds, mine and my older sister's. I looked over at my sister and saw who I thought was her sitting on her bed and her elbows were on the little table next to her bed and her hands were closed into fists and she had her chin propped on them. I could see she had a braid on each side of her head and I remember my sister had gone to bed with two ponytails, not braids. I kept calling out to her, but she didn't answer.
There was also a person in the middle of the room, another one leaning over me and one by the window. There was also one in my doorway, blocking it. They all just stood there motionless looking like 3-D shadows. They had dimensions, only they were solid black.
I slid off of my bed to avoid touching the one leaning over me and went around the one in the middle of the room to stand at the foot of my sister's bed, which was near the window and another shadow person. I could see my sister lying next to this "thing" that I thought was her. I could see an impression on the bed where the thing was sitting, like it had weight to it.
That was it for me, I closed my eyes and ran past all the shadow people to my parents' room and when we came back, there was only my sister sleeping in there. I had never heard of shadow people at that time, but that is what I called them, so the first time I heard about shadow people in books or online, I wondered if anyone had ever experienced what I did.
But so far, all that I have read or heard about on talk radio, no story is like mine. Usually people see them out of the corner of their eye or moving across the room, but never just standing like mannequins. It was almost like I was in another place and time was standing still. But why was one on my sister's bed, and why did it almost look like her? Another weird thing was, my sister usually did have braids in her hair because she liked the way it made her hair look when she took them out. But this night she didn't. It was almost as if it was trying to look like her.