Thanks to John Anthony Adams, who submitted the photo below. He is also a historian of the Rialto Historical Society of Rialto, California.
The photo was taken in a haunted old church building in Rialto, California. The building is the home of the Rialto Historical Society. The photographer, Rich McInnis, did not see anything on the stairway when he snapped the photo. He was shocked to see the image after taking the film to a one-hour photo development service.
There seems to be many ghost stories and sighting in this one perticular church. The old church building is a very unusual haunted structure because of the discovery of a ghost portal in the kitchen area. This was reported in precisely the same location on three separate occasions by psychics who came to visit the old church without hearing what others had to say about it. They concluded that this allows ghosts to enter and leave the church and accounts for the large number of ghosts there.
Mr. Adams has also written a book about his experiences in the church. It was published in June 2008 and is available on Amazon.com. The title of the book is "The Little Girl in the Window: A True Ghost Story.".