Images of Mercury reveal massive spider-like formations on its surface. Is it an odd geological formation - or something much more ominous?

How did pictures from the Hubble telescope make the comet of the century look like an alien spacecraft? Has earth already been invaded by alien organisms?

Riding along the Isle of Man may not be a taxing adventure, but the island is home to perhaps the most famous road race in the world and Henry Cole is about try it.

Starting in Auckland, Henry Cole sets off on two wheels but soon takes to the air and sea to see more of the breath-taking scenery New Zealand is known for.

Henry Cole continues his adventure through the South Island, New Zealand. His route takes him through primeval forests and beautiful coastal towns.

Joe Donovan, an avid skier and adventurer, has found the perfect spot for his permanent base camp on a remote ridge in southwest Montana.

In 2014, Malaysia Airlines flight MH370 vanished without a trace. Did it crash and if so, why can't the wreckage be found?

Atlantis is one of the most famous disappearances. After thousands of years, can state-of-the-art technology finally to crack this ancient mystery?

After a huge cargo ship suddenly vanishes with 27 crew members on board, new evidence suggests the culprit may be a mythical rogue wave.

In 1918 the SS Princess Sophia mysteriously sank near Juneau, Alaska. Experts look for answers to the shipwreck as a ghost hunter tries to contact her victims.

A famous UFO case occurs above Alaska when an unidentified flying object pursues a Boeing 747. Locals suspect a monstrous bird stalks the skies.

A secret government facility in the wilderness may be hiding an extra-terrestrial pyramid. And, are strange forces in the Triangle making wildlife more aggressive?

In 2014, Malaysia Airlines flight MH370 vanished without a trace. Did it crash and if so, why can't the wreckage be found?

While two builders battle gale-force winds and rain, it's a whale of a good time at the third site.

Sparks fly at Tom's camp as a worker showdown threatens the project. Later, a bear attack leaves Jodi on edge at Creig's camp.

The Lighthiser family sets out to build their dream home overlooking the Yellowstone River. With a little help from their friends they'll build it all by hand and off the grid.

The guys peel many layers off a covered log home to reveal the hand-hewn timbers they can salvage.

Hans Holzer conducted several investigations of Franklin Castle in Ohio. The team uncover why Hans refused to publish his findings on this mysterious case.

In 1969, Hans Holzer's investigation of Howard Lodge was abruptly cut short. The team travel to Maryland to uncover the truth behind this spooky manor.

The team investigate a vicious canine-feline hybrid. They track the predator toward their tiger-box trap in frigid temperatures.

The boys are in Cleveland, Ohio to explore a former funeral home. The building was made to trap energy and may explain reports of a dark presence and apparitions.

Josh Gates heads to Israel and Ethiopia to search for the lost Ark of the Covenant, the sacred relic said to contain the Ten Commandments.

The AIMS team hunts down a monstrous wolf-like creature that is lurking in the cornfields of Jackson County, West Virginia.

In 2014, Malaysia Airlines flight MH370 vanished without a trace. Did it crash and if so, why can't the wreckage be found?