Ok - ya'll pulled it out of me
About the "shadow people" - Waverly Hills is notorious for having them. If you saw any of the GH episodes at Waverly, the "shadow people" are very often discussed.
What we saw the night of the tour was odd. I was 99% sure it was an optical illusion .. up until the very last moment.
The structure itself is long and narrow - long hallways with rooms on either sides. One side of the building also has many windows on most floors; it's said that the patients were wheeled out onto the open areas as a part of their treatment for TB (even with snow sometimes falling on their feet).
Anyway - if you stand at the end of one of these hallways, you can very often see a dark form "breaking the light," as if something is crossing the hallway in front of you. You have to look closely and your eyes have to adjust to the darkness in order to see this. There was a group of about 20 of us all standing in this hallway and, after a few moments, you started to hear people saying, "OH! Did you see that??" and other exclamations of surprise.
So, I'm standing there and I start to see what they're talking about. But I'm thinking to myself that if you stare at something long enough, your eyes start to play wonky tricks on you. So I was pretty dismissive.
We watched "it" for a long time and then it seemed to become a bit more clear. It really looked like a human form walking from one doorway at the end of the hallway to another. We were all pretty engaged and the group became extremely quiet.
So we watch it walk across the hallway and then we don't see it again for a bit. So the crowd started whispering a bit and we thought it was gone.
Except -
The shadow "peeked" around the corner. We all saw it - it was extremely clear. It had been moving back and forth and was still a bit "questionable" as to if it was a trick of the light. But to see a head peek around the corner and look at you - WOW. It freaked the entire crowd out! Some people started screaming and everyone ran the other direction. Lucky me, I was at the back and took the brunt of the impact.
So that's my experience with shadow people. I've not seen one before (not that I remember) and I've never seen once since. I really thought that I would see it again on the overnight I spent there but no chance. We saw and experienced absolutely nothing.
But I bet on a quiet night, without a lot of people around, you can see them there. On the "tour" I took (the night I saw "him"), I actually felt scared to be there. I don't scare easily and I never have been afraid of "ghosts." But there was something in the air - something frightening. I stayed close to the group.
The night I stayed there it felt just like any other place in the world. No scarier than my kitchen. I often wandered off by myself and didn't get the "heebie jeebies" at all.
I guess even spirits have "off" nights
I'll come back and share my personal ghost experiences from when I was young. It'll be nice to share them with people who actually find them interesting