They say that the camera "never lies." While that may be an absolute truth, it's not always that cut and dried when it comes to the practice of photography.
Here we take a look at 27 extraordinary photos, and if the camera's not lying in them, it's doing an incredible job of telling a different truth.
Each of these photos has something within the image that defies any rational explanation. Maybe you can work out what happened that made these images so unusual? We know that we can't.
So let's take a look at these unusual images and the stories within together. Starting with ...
1. A Long Fish
This is a group of fishermen who claim to have caught this creature, which they say is a Cadborosaurus (a mythical sea creature), near Alaska. To date, the creature remains unidentified by science.
2. Space Cadet
An ordinary family snapshot and a spaceman. This is the "Solway Firth Spaceman." The photo was taken in 1964, and the camera man says no-one else was there when the girl's picture was taken.
3. Unusual Burns
This image was taken in the 40s. The man in bed is covered in unusual burns which he claims were from cigar shaped flying objects. He also says that he heard voices inside the objects.
4. Time Traveler?
Look to the right of the frame and about halfway up. This was the 1940s, and people didn't dress like that back then, so where (or when) did that guy come from?
5. A Lot Of Problems
This photo is not unique. It's from Hessdalen Valley in Norway and many photos taken there bear the same bright color markings. No one can find out why.
6. Under The Sea
We wouldn't fancy going for a dip with that giant tadpole thing under the water. It's nearly 80 feet long, and has remained unidentified since 1964 when the image was taken.
7. Dark Skies
The first image was taken in 1960 and others have been taken since. These are real life unidentified flying objects, or UFOs. They regularly appear in earth's orbit and then disappear again.
8. Spectral Presence
See the figure in the tree line behind the guy at the edge? Well, the guy didn't (and nor did his friends) and they say they spent 15 minutes in that very spot.
9. The Babushka Lady
This woman appeared in several photographs from the scene of the Kennedy assassination. Investigators have never been able to work out where she went or who she was. They nicknamed her "the Babushka Lady."
There's a soldier who doesn't belong in this photo. His name was Freddy Jackson and he'd died several days before the photo was taken.
11. Spectral Companion
An ordinary photo of a man in a car. Except for the glowing-eyed woman in the back. The photographer claims this was the ghost of her mother, whose funeral they had just attended.
So here we see a watch in the hands of a Chinese archaeologist. It's supposedly more than 400 years old and had the word "Swiss" engraved on the back. We think it's more likely a hoax, but that's never been proven.
13. It Can't Be
This lady is just walking and talking on her cell phone, right? Except it's 1928 and the cell phone won't be invented for roughly another 50 years.
14. Jurassic Park
This looks like a hoax, but it isn't. This group of soldiers from the American Civil War claimed that they shot and killed this flying creature.
15. Missing You
The guy in the background was not there when the photo was taken. That's because he's the lady's husband, who had died 13 years before the image was captured.
16. The Hanging Man
This photo was taken when this family first moved into their new home. When it was developed, the image of a man hanging from the roof can be clearly seen. Some claim it is the spirit of the home's former owner.
17. I'm On My Cell
This photo is from 1938, which was a long time before cell phones were invented. Yet, it really does look like this woman is speaking into exactly such a device.
18. Moon Pyramid
The Black Vault
THis photo was taken by Apollo 17 on its flight to the moon, and shows what appears to be a pyramid-like structure. Officially, NASA claims it's a "blank" photo as the pyramid wa only visible after several lighting adjustments.
19. Forest Ghost
These hikers swear they were all alone when they took this photo of themselves, but the ghostly figure in the background would suggest otherwise.
20. Look Out
Who is that creepy, knife-weilding shadow in the back? The family staying at the cabin never noticed him at the time, and they never found out if it was a real guy or just an illusion.
21. Amityville Boy
Back in 1976, a police officer investigating a murder at the notorious Amityville home in New York photographed an empty crime scene - only to realize he had a ghostly observer when the photos were developed.
22. Ghost At The Altar
A reverend took this picture of the altar at a church in North Yorkshire, England, but didn't notice the ghostly figure resembling a Franciscan monk until the photo was developed.
23. Phoenix Lights
These lights were reportedly seen over parts of Arizona, Nevada, and parts of Mexico. The five spherical lights moved very mysteriously, and produced no sound.
24. Mystery Ape
This photo was taken in 200 by a woman who claims the mysterious ape stole apples from her yard. The creature in the photo, however, doesn't seem to resemble any currently known species of primate.
25. Girl In The Flames
This photo was taken during a raging fire. Only after the picture was developed did the photographer see the girl peering at him through the flames, seemingly unaffected by the fire.
26. That's Freaky
This seemingly innocent photo looks normal enough... until you realize that there's an extra hand behind one kid's head that has no earthly business being there, as it doesn't belong to any to them.
27. Strange Lights
This image was published in the Los Angeles Times in 1942, and many claim it provides documentation of an extraterrestrial visitation.
Aren't they a curious collection of images? We'd love to know more about them. Wouldn't you?
Be sure to SHARE this with your family and friends!