Is The Mark Twain house haunted?

It may or may not be haunted... there have been reports of sightings of a woman in a white dress walking from Suzy Clemen's room to the Nursery, and there has been a report of one woman who felt three tugs on her shirt. But every sighting has been out of the corner of the person's eye. Ghost Hunters have tried to uncover whether or not it's haunted, but it's an old house. Who knows? It might be haunted with Twain's twenty-four year old daughter! It all depends on if you believe in paranormal activity or not.