I was staying with some long time friends in their house in the Denver suburbs. The house is about 120 or so years old. Nice beautiful old home. They went off to work and their kids went to school, I was kicking back having some coffee in the living before I went off to a meeting. I got the "someone is watching me" feeling. Ignored it of course. Out of the corner of my eye I saw some movement, I looked and nothing was there. About 10 minutes pass and the same thing happened again. I thought maybe it was one of their dogs. I walked over to where the movement was and no dogs....in fact I realized I hadn't heard or seen the dogs for about 10 minutes. I walked into the next room where the stairs came down and both dogs were standing on the landing the stairs staring into the room I had come from (the room where I thought I saw movement out of periphery of my vision). I called them, grabbed their toys and even some food and they refused to come down the stairs and barely broke their stares into the other room.
Ok.....weird.
I went back to the living room and sat down. It happened again, but, this time I know I saw something move. I went back and looked around, nothing, dogs still on the landing of the stairs.
When I went back to the living room I sat back down with my back to the other room but where I could see the doorway in the reflection of a mirror. About 10 minutes went by and then bam, all of sudden there was a shape there, about waist high, a black shadow with a pretty clearly defined head (no features at all), shoulders and arms to about mid upper arm then just sort of faded out. It was suddenly there and then moved out of the doorway. Needless to say I leaped up....cleaned up the coffee I spilt and got outta there.
I didn't say anything to my friends....was trying to think of how to brink it up. We were sitting around after dinner when his son ran into the living room, "Daddy, Mommy, the shadow boy is back!!"
When they bought the house the realtor told them he had a legal obligation to tell them that the house was considered haunted. The old lady they bought it from kept a small made bed, a lamp and a radio in the basement "for the man who lives down there...." even though she lived alone.
They told me there were two ghosts they had become aware of, The Blue Man and the Shadow Boy.
Only their son could see the Blue Man (a few creepy stories about that). They never told anyone about the Shadow Boy. They had some very religious friends baby sit one day at their house when their son was very young....they saw the Shadow Boy and were so freaked they were waiting outside when my friends got home and never went back in their house. They never told anyone about it, but, every person (about 4 or 5) that saw it (including a guy doing work in the house, who left the job half done and returned the deposit for his work) all described exactly the same as I saw him.