An Unexpected Guest - 1950s
The Unexpected Guest 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 and appears to be hanging from the rafters.
Amityville Ghost - 1976
The Amityville Ghost photo, taken by Ed and Lorraine Warren, claims to show the ghost of 9-year-old John DeFeo.
John, along with his other brother, two sisters, and parents, were killed by his older brother Ronald at their house in Amityville.
Ed and Lorraine were paranormal experts who entered the house and captured this image using a camera that consistently took infrared photos during the night.
Grandpa's Ghost - August 1997
Denise Russell took the Grandpa's Ghost photo on August 17, 1997.
Even though the photo had been developed, copied, and given to other family members, nobody noticed the male figure standing over her until Christmas Day 2000.
The Russell family says the man is the spitting image of their grandpa, who died in 1984.
Photo: Cavan Images RF