When we lived in Germany for 6 years I would always hear footsteps in the attic of the house we lived in. I would be so scared to go up there and check so I asked my mom if someone was up there and she would say no. She would always tell me that it was my imagination, but I knew it wasn't because when my friend was over she would ask me if my dad was in the attic. When she asked me that I went and told my mom that she also heard the footsteps.
That night my friend was sleeping over and we heard the footsteps while we were just talking in my room. We were so scared that we called my mom and dad in the room and they said that they didn't hear anything.
That night when my parents went back to bed we snuck up to the attic (all we had to do was go up these stairs) and when we got up the stairs the door was wide open, usually the door is closed. We went in the room and it felt like someone was watching us so we ran back down the stairs to my room. We could barely sleep that night because we were still hearing footsteps.
The next day my friend slept over again and we decided to go back up there. When we went up there we heard footsteps that were louder than ours so we just stood still and we still heard the footsteps. While we were standing there I felt something brush up against me and I thought it was my friend but she was on the other side of the room.
Since that day I never went back up to the attic.