I stayed in a haunted plantation home in Louisiana many years ago. I knew things were missing from the rooms, how to get around without a guide and knew they had moved a small out building - I was 13 and had never been there before or seem anything about the Olive prior top visiting it. My 11 year old cousin and I were covered up at night even though no one had extra blankets. Oh, and I saw 2 small children playing ball in a grassy area near the plantation's main house...turns out they'd been dead a couple hundred years.