An accident at sea cripples a Royal Navy expedition 200 miles from finding the Northwest Passage, forcing its captains to make dire choices.

After a long winter trapped in the ice, scouting parties are sent out in search of open water. One of the teams makes a frightening discovery.

With something now stalking the ships, the captains debate their options, testing their loyalty to one another against their duty to their crews.

A cunning attack on the ships proves the men are not battling an ordinary bear and that the region's Inuit culture may hold a key to their survival.

A strange illness begins to show itself while another more familiar one jeopardizes the expedition's most valuable resource: its captain's judgment.

With the end of their provisions in sight, officers contemplate a tough, risky strategy while struggling to raise the men's worsening spirits.

As the men make new attempts to find rescue, a series of shocking events underscores how vulnerable and exposed their situation has become.

Deaths under mysterious circumstances create paranoia among the men, and some of the crew may be considering mutiny.

Hope comes in strange forms, and the question of what the men are willing to do to survive begins to be settled in both noble and horrifying ways.

The expedition's epic journey reaches its climax as men find themselves in a final confrontation with the Inuit mythology they've trespassed into.

Since 2007 numerous severed human feet, typically wearing running shoes or hiking boots, have washed up on the coastline of British Columbia Canada. Who do these feet belong to, where are they coming from, and why won't it stop?

In 1966 and 1967, rural West Virginia was plagued by a series of sightings of a large flying man with ten foot wings and red glowing eyes. Local folklore dubbed the creature the "Mothman". Was the Mothman a harbinger of doom or a warning from the future?

One morning in 1855 residents of Devon, England awoke to find 40 miles worth of hoof-like footprints in the snow. Were the footprints made by a mysterious animal, or were they left by... The Devil himself?

More than 160 years after a doomed Arctic expedition, archaeologists recently discovered the wreckage of both ships-- The HMS Erebus, south of King William Island, and The HMS Terror just 30 miles away.As excitement builds for the discoveries, some in nearby Gjoa Haven fear the wrecks' dark legacy of death will resurface now that the ships final resting places have been disturbed.

When an unidentified radar blip was detected over Lake Michigan in 1953, First Lieutenant Felix Moncla Jr. Was dispatched in an F-89 Scorpion to intercept and disappeared without a trace. No wreckage was ever found. Did Moncla experience vertigo or encounter an unexplained storm? Or was it something more extraterrestrial?

Host George Takei gives the latest news and updates on his entertaining, incredibly creepy explorations into some of history's greatest mysteries.