When I was a teenager, we had just moved into a modest 3/2 that was about 30 or so years old--nothing ancient by any means. One evening I was in the kitchen and the door to the garage opened slowly, I thought little of it figuring it was my dad coming inside. Well, when I turned back around to the door to speak to my dad no one was there. My dad then called to me from the living room (opposite direction) and the door then slammed very hard. This was immediately followed by a glass container sliding off the rear of the refrigerator and breaking on the floor.
A few years later, a girlfriend of mine was in front of a mirror applying makeup down the hall from me. I heard her call out my name in a questioning way. When I responded she asked who the guy was that was behind her in the hallway watching her in the mirror. (She thought I had let a friend in the house). Of course, no one was there!