I lived in a house that had ghosts. No kidding.
It was the strangest experience I've ever had. Furniture would rearrange itself, music would play from behind closed doors when there were no radios or stereos in the house and when you would open the door...the music would stop.
You would catch people and animals moving across the room out of the corner of your eye but when you turned and looked, they were gone. All the window shades in a room would open or close themselves after you left the room and came back just minutes later.
When the entire 3rd floor storage area rearranged itself and all the boxes were stacked to the ceiling in pyramids overnight, we moved out.
It was in Newark Delaware, reputedly one of the most haunted towns in America.