The details of this photo are unknown, but a wispy ghost can be seen in the upper right corner of the image.

This is a still frame from a video taken in 2008 at Colonial Park Cemetery in Savannah, Georgia. It shows what appears to the ghost of a child running through the graveyard.

This photo of Sir Victor Goddard's World War 1 squadron was taken in 1919. In the back row, the face of Freddy Jackson, who was killed days earlier in a freak accident, can be seen peeking out behind one of the squadron members.

This photo was taken as a family moved into their new home in Chicago. Two ghostly faces appear to be looking out the back door as they pose for the picture.

This photo was taken at a cemetery in Tennessee. As the man in the photo looks down at a tombstone, an image of a Confederate soldier can be seen in the upper right corner of the picture.

This photo was taken at a spiritualist convention in Los Angeles in 1969. The man in the photo is Robert A. Ferguson and he believes that the ghost is his brother who died in World War II.

This photo was taken at Six Flags in Arlington, Texas. A ghostly figure of a little boy appears in the bottom right corner of the roller coaster photo.

This photo was taken at the Combermere Abbey library in Cheshire, England in 1891 by Sybell Corbet. The ghost is believed to be Lord Combermere, who was killed after being hit by a horse-drawn carriage in 1891.

This photo was taken by Mrs. Andrews in Australia in the 1940s. When she developed the photo of her 17-year-old daughter's grave site, an image of a small child appeared in the photo.

This photo was taken by Rev. Ralph Hardy at the National Maritime Museum in Greenwich in 1966. The identity of the ghost is unknown.

This photo was taken by Reverend K. F. Lord at Newby Church in 1963. The ghost in the photo is unidentified and only appeared after the film was developed.

This photo was taken by Terry Ike Clanton at Boothill Graveyard in modern times, but it was taken in black white to have a vintage appeal. Above the subject's left shoulder, a ghost can be seen amongst the tombstones.

This photo was taken by the Ghost Research Society at Bachelor's Grove cemetery in the Chicago suburbs in 1991. The cemetery has had reports of countless ghostly incidents.

This photo was taken by Victoria Iovan in 2008 at the Decebal Hotel in Romania. Sightings of the ghost of a tall woman had been reported at the hotel for years.

This photo was taken in 1936 by Captain Provand and Indre Shira The ghost is believed to be Lady Dorothy Townshend, as she is said to haunt this staircase of Raynham Hall in Norfolk, England.

This photo was taken in 1959 by Mrs. Mabel Chinnery at the cemetery where her mother is buried. The photo clearly shows her husband sitting in the car, but there is also a mysterious man lurking in the backseat.

This photo was taken in 1997. The woman in the photo is the photographer's grandmother and the man behind her appears to be the photographer's grandfather who passed away in 1984.

This photo was taken in 2008 at Scotland's Tantallon Castle, which is famous for its ghostly occurrences.

This photo was taken in the Philippines in 2000. It appears that a ghost is grabbing the arm of the girl on the right side of the photo.