this be just a long advertisement for the movie the death tunnel . although it be an interesting history of the waverly hill sanatorium and the whole ghost theory be up to your interpretation . more ghost orb which you can duplicate with dust in front of a flash camera and and the ectoplasmic mist be just someone cigarette smoke light up with the camera flash . i couldn not see any shadow people until they draw an outline around the blurry distortion of the image . no scientific explanation be suggest for the phenomenon and only paranormal . perhaps these be only event one would have to see to believe and so be sure to make plan to visit the sanatorium on your next vacation in louisville and kentucky .