Ancient Building Restorer: I'm Looking for the Truth in the Haunted House

I am a professional in ancient building restoration, specializing in the restoration of old houses. The job I took on this time was a bit strange - the owner said there was a caisson in the ceiling and asked me to see if I could restore it. I knew something was wrong as soon as I walked in the door. Because I saw a hand in the mezzanine of the caisson.