One summer I went up to Georgia to stay with some family and babysit. One night my cousin, Aiden, and I were getting ready for bed in his room. We had to fix the sheet because he had spilled crumbs all over the bed. He got on one side of the bed and I was on the other side of the bed, we both tucked the sheet back in under the mattress. Suddenly, movement by the door caught our eyes. We both looked towards the door and a shadow appeared. It ran across the hallway, seemingly from his sisters room, to his parents room then ran out of their room. In a way, it seemed like it was running back to his sisters room but instead saw me or us and stopped... It just stood in the doorway of his room. We both stared, trying to figure out what it was.
Our first theory was one of his little sisters but the shadow was black - pitch black. It couldn't have been an actual person. We both got really freaked out and were arguing on who should close the door. As this fight went on, the shadow disappeared. Still freaked out, we threw many blankets towards the door to try to get it closed. The one I threw was too short. So I made Aiden get up to close it. He walked halfway to the door and threw the blanket. It worked; the door closed. We both tried forgetting what happened and went to bed fine that night.
In the morning we told Aiden's step-dad, Daniel, what happened. He told us about a similar story he had that included a shadow but standing next to his bed. We didn't know what to think.
After I came back down to Florida, I asked if any more ghost experiences had occured and they say nothing at all. So to this day it is still a mystery.