Two nighttime explorers find a figure skulking around in an open grave; experts consider whether this person could be a tombstone tourist, the unlucky victim of a drug cartel or simply a person looking for some shelter.

A bus in the Italian countryside is found spewing powerful jets of fire; experts consider whether the vehicle was being used as a type of weapon, or if the blaze was the result of the fuel that the bus used or the battery it ran on...

In Washington D.C., a naked man chases after a car at superhuman speed; experts consider if the man could be the product of government attempts at creating a super soldier, or the failed result of a mind-control experiment...

A stargazer in Scotland films what looks like a ship breaking off from a meteor in an area known for UFO sightings; experts consider whether this could be a high-tech NASA operation, a delicate military refueling maneuver, or something else entirely...

A monk unveils what looks like the corpse of a mermaid; a note claims that the creature was caught in the 18th century; experts investigate the possibility that the strange figure was actually a hominid that evolved to live in the ocean.

A hunchbacked creature scurries out of the jungle in Costa Rica; experts consider if this could be the mythical beast known as La Mona, a person with a rare medical condition, or the result of a powerful drug known as the devil's breath...

CCTV footage captures a ghostly disturbance in a French chateau; experts try to uncover a worldly explanation for this shocking mystery...

A man filming a wedding flees in terror as a mysterious explosion rips through the festivities; an explorer in the wild jungle of Vietnam comes across a bizarre tree whose trunk shimmers as though it is alive...

A truck engulfed in flames barrels down a lonely Brazilian highway...

A gravity-defying cube spins through the skies over Missouri.