I'm with angus, we used to have someone who "walked" the upstairs with big loud footsteps. Especially if he was upset about something.
When we first bought the house we tore a lot of stuff out, did extensive remodeling in the kitchen. Lots or rewiring in other rooms. Painting almost everything in the process. After some weeks of this you could almost feel it when you walked in the door. Something in the house was not happy at all about all the mess and construction. To the point that he was somehow causing my wife and me to fight and argue constantly if we were in the house. Walk outside and the high tempers vanished.
So I walked up stairs, and had a bit of a talk with it.
Carpets coming in tommorow, painting is done, kitchen will be finished by this weekend.
Ease up and give us a chance, please. For the next week the house had kind of a waiting hush feel about it.
But as carpeting went in, and the last of the mess was cleaned up things quickly settled into a routine.
However a couple of times a month I would clearly hear footsteps on the floor above. House is a story and a half.
Attic space is finished, however with no heat or cooling up there we always just used it for storage. Only one door leads up there from the living room.
Several times after hearing the footsteps I would rush up the stairs and see nothing.
Eventually he settled into a quiet routine. A big 3 way argument or fight would almost always have him showing his displeasure in some way. He did knock on my daughters basement room door once, like he was asking permission to enter. The next night the TV that was always turned on while she slept, was turned off in the middle of the night. No one else entered the room. Don't think he liked the TV being on for some reason.
I only saw him once, around 2am got up to go to the bathroom, looked out the hall across the living room and saw him silhouetted against the window. Just a dark man shape that I could see through, yet I could see there was a "shadow" there.
After my daughter moved out he went away, we havn't heard the steps on the floor since.
Not sure why he was so protective of her. But that's the way he seemed to be.
He did seem to have a pattern. Starting at the west end of the upstairs. We'd clearly hear him walk one room.
An hour or 2 later we'd hear him in the next room. After midnight our daughter sometimes heard him on the main floor.
Once while 4 of us were having a heated animated discussion in the office he reached through a wall, and a bookcase solidly packed with books to brush my wife's hair.
Needless to say she freaked. I went back upstairs and had another talk about what was "allowed". No more problems.