Ghosts, the paranormal and the supernatural have always been debated. Do they exist?
Many people have reported sightings before, but without any real proof, they're usually disregarded as merely stories. Being able to take photos of spirits obviously helps the cause, but are all of them real or have some been doctored?
Here is a round-up of the most famous "ghost" photos of all-time.
An unexpected guest - 1950s
This image, taken at some point in the 1950s shows a small family sitting at a table. Two boys sit happily on their mother's laps but a pretty terrifying and unexpected guest has also dropped in. Hanging disturbingly from the rafters.
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