This will be long:
I've got a good story from a few friends. All three are good friends and for the most part are trustworthy. It took place at a construction site in DC in 2002 that my friend Adam was running for his father, who was in charge of the whole job. It was late at night so Adam sent all the workers home, but himself, Danny (his younger brother) and Jeremy stayed to finish up some work on one of the higher floors. This is what happened:
Danny had gone down to his Dad's office on the second floor to get some ulcer medicine (Danny is 19 and already has ulcers, among numerous medical problems, go figure). He was relaxing in his Dad's chair when he heard someone starting to walk slowly towards the door, so Danny got up and positioned himself to jump out and scare Adam or Jeremy, whoever was coming down to talk to him. As he was waiting, the steps got to the door, paused, and then the door's handle (of the bar design) began to slowly and cautiously turn downwards. Danny thought knew this wasn't normal and thinking it was someone who had broken into the site, he ran to the door, grabbed the handle and yanked the door open. There was no one there, but he heard footsteps rapidly running at the far end of the hallway.
He got on the walkietalkie and told Adam what had happened. Adam and Danny are very...stubborn people. They won't bend on something, and Adam was intent on finding whoever had broken in (presumably just a homeless person looking for a place to stay, he said they get those a lot). Adam and Jeremy started to run down towards Danny, as Danny himself tried to chase the sound. All 3 met at one of the stairwells, Adam went down to the first floor and locked the main entrance (the only open entrance to the building), then ran back up to the second floor. Danny recounted exactly what had happened, which pissed Adam off even more. Danny was sure the person hadn't gone downstairs, so since the doors were locked they had to still be in the building.
Then they heard footsteps on the floor above them. They went in pursuit, searched the third floor but didn't find anything. Then they heard footsteps on the fourth floor...Same thing, went up, didn't find anything. Footsteps on the 5th...nobody on the 5th. I believe it was on the 6th floor that things started getting knocked over. Papers were in the air, shelves sliding out etc. Adam began to lock off each floor as they searched it and cleared it, all while hearing the footsteps all around them.
Then on the 4th floor they started to hear the footsteps not only above them, but below them - but they had already locked off those floors, no one could have been on them. Then they started to hear footsteps on the 4th floor, they ran around in a fury trying to find who had broken in and each turn of a corner only greeted them with rolling chairs or papers just knocked off of desks.
Footsteps below them, floor by floor until they reached the first floor, when they heard them in the basement. The basement had no power running to it at the time and at this point they were all freaked out to the point that they gathered whatever weapons they could before they went into the basement. Sledge hammers, exacto-knives and if I remember right, even a gigantic wrench. They went slowly into the basement and did not split up this time.
Adam later told me that being in that basement was the freakiest experience of his life. I can tell you that there is not much that is humanly that will scare or intimidate Adam. He is not afraid to get into a fight, even if he is going to loose (which isn't often). The man has a tattoo across his abs, written in Polish that translates to, "The Blood of the Wicked".
They continued to chase the footsteps without ever finding the source and at this point they were hearing footsteps in almost every direction of the pitch black basement, which Danny counted as at least 6 different people. It got to the point that they knew it wasn't homeless people, that there was something else down there. They all got too freaked out and
ran out of the basement.
Here is the kicker; As they left the building, all 3 noticed something on the exterior wall. In about a 3-4foot square space were dozens and dozens of tiny, black handprints; like several children had gotten into the tar and put their handprints all over the wall. Adam said the spot it was in was right between the main entrance and the port a poty, a spot they all passed 20 times a day and not once before had any of them noticed the handprints.
Now, a little bit of a freaky coincedence. I work(ed) at a seafood market called Crosby's Crab Co. Everyone there is a tight group of friends, it is rare that someone works there that isn't a friend of ours. All three of the Kolakowski's work there (Adam, Danny and Scott), Jeremy even worked there at one point. Everyone works on the weekend, but this particular day Adam and Danny couldn't be there because they had a deadline at the site. It was a rainy night so business was slow, everyone who was working was standing around in the back and we were all telling ghost stories. We were telling ghost stories at the exact same time that Danny, Adam and Jeremy were running around the abandoned building in DC, following footsteps of people who were never there, finding dozens of child handprints in tar on a wall. Those two would have normally been at work that night, telling those same stories with us, but instead were 40 miles away experiencing one...
I've heard the story from all 3 people, at seperate times that night, and they all described the same thing. And these are 3 people who aren't normally creative enough to come up with a story this elaborate...
I've got a few more, one really good one, but I'll let some other people post first.