These are the things that go bump in the night.
From murdered slaves to tortured hospital patients to forgotten sailors, ghost stories will send a shiver down most people’s spines.
But this collection of images will call into question everything you think you know about the spirit world… and how easy it may be to cross back over from the ‘other side’.
Paranormal investigators have spent decades painstakingly researching each photograph, debunking some and failing to disprove others
Taken at Corroboree Rock at Alice Springs, Northern Territory, Australia in 1959, this photograph appears to show a woman holding her hands toward her face, peering out into the distance
Take the tale of the white lady of the Philippines.
Locals of Quezon City steer clear of Balete Drive at night as they say that a woman in white with long black tresses, face covered in blood, stands in the centre of the road, staring at oncoming vehicles.
Drivers try to avoid the street at all costs – but if they must pass, they pack their backseat with passengers because if there is one empty seat, an uninvited guest just might take it.
In photographs, she appears as a bright, white light in the road, legs barely visible.
Or consider the story of Chloe the inquisitive slave.
Chloe lived at the house of Myrtle’s Plantation in St Francisville, Louisiana.
She would often listen in on conversations she wasn’t supposed to, snooping in on her master’s private talks.
One afternoon, Chloe was caught. According to legend, her master cut off her ear as punishment.
For revenge, Chloe baked a cake out of oleander leaves, which are poisonous.
She wanted her cruel master to taste it, but his wife and daughters beat him to it.
She fled the house, but was lynched by her fellow slaves. She still haunts the plantation to this day, listening in on the conversations of its visitors.
Chloe can sometimes be seen hiding behind the doors, columns, or bushes on the residence.
An Australian woman named Mrs Andrews was visiting the grave of her daughter in a cemetery in Queensland, in the 1940s when she took a photo.
Australian paranormal researcher Tony Healy visited the cemetery in the late 1990s to find out what had happened.
Diane and Peter Berthelot visited Worstead Church in Norfolk in 1975 with their 12-year-old son.
Peter snapped a photo of his wife praying silently in the pew.
When they looked at the photos a few months later, a friend asked ‘Who’s that sitting behind you, Di?’
The mysterious figure appeared to be dressed in old-fashioned clothing, including a bonnet, .
Confused and confounded, the couple returned to the church the next year to share their photograph.
The church vicar, Reverend Pettit, told the Berthelots the legend of the White Lady.
The ghost, Reverend Pettit said, was known to visit people who had fallen ill, offering them comfort and healing them.
Diane was shocked because when the photo was taken, she was taking antibiotics and was not doing well.
The legends of the White Lady date back more than 100 years. She is said to appear on Christmas Eve every year and the church in which she once dwelled is now an aptly named pub: The White Lady.
Some of the photographs have been researched for decades, with paranormal aficionados looking into their origins.
In 1924, for example, the SS Watertown was en route to the Panama Canal from New York City.
James Courtney and Michael Meehan were killed by gas fumes in a freak accident while cleaning a cargo tank.
In the days following their deaths, crew members began reporting seeing two faces in the water following the ship.
The captain snapped several photographs of the water where their faces appeared and of five, one appeared to contain the apparitions
Blake Smith looked into the history of the image after it frightened him in elementary school.
He says the story originated with the oil company Cities Service (CITGO) who were the owners of the Watertown. The first publication of the image was in the in-house magazine Service in 1934, Mr Black says.
He found another paranormal investigator’s research, which included information about how the captain’s film was developed.
A commercial photographer in New York apparently took hold of the film once the ship docked.
Mr Blake consulted Joe Nickell, investigator with the Centre for Inquiry about his opinion.
‘That picture has a suspiciously hard edge to the (viewer’s) left side of the face on the left, and this ruler-straight line (the edge of a rope) extends all the way to the top of the (cropped) picture. This looks like some form of photographic skulduggery (indicative of cutting and pasting, or possibly masking in conjunction with an airbrush).’
Despite his findings, he believes that one of the ghost faces may be real, the second added for effect.
‘The photo does date from a time when bogus spirit photos were commonly produced,’ he admits