There was an episode of Loveline (the radio show) ~20-25 years ago where a young woman called in who grew up in a large mansion. Part of what she brought up was

There was an episode of Loveline (the radio show) ~20-25 years ago where a young woman called in who grew up in a large mansion. Part of what she brought up was that there was a man who lived in the walls/unfinished spaces of the wing of the mansion her bedroom was in, and I believe that one of the exits from inside the walls just happened to be her bedroom closet. Basically every kid's worst nightmare.