Synopsis

It's one of America's most mythic UFO incidents. A 200-yard swath of debris that landed near Roswell, New Mexico. Some believe it was an alien craft, others that it was a secret government experiment. The deeper researchers dig, the more perplexing the story gets. It's a mystery that's endured for nearly 80 years. So what really crashed in Roswell in 1947?

Synopsis

The search for the illusive Northwest Passage, leads to a historic expedition that sets sail into a labyrinth of ice and is never heard from again. That disappearance sparks a search for clues spanning nearly two centuries and leads to unthinkable ends. What really killed the men of the Franklin Expedition?

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On February 14th, 1929, one of the most shocking murders in mob history goes down in Chicago--and becomes known as the Valentine's Day Massacre. The 20s and 30s are full of gangland murders, but the Valentine's Day Massacre is considered the most brutal -- and the toughest to solve. So who carried out the Valentine's Day Massacre? And why?

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Sightings of the Yeti, a creature of myth and legend, have been recorded for thousands of years throughout the Himalayas and surrounding regions. Could this seven-foot-tall creature, covered in shaggy gray hair, be hiding in plain sight? And if the Yeti does exist, is it a living being--or something else entirely?

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Amelia Earhart, the world's most famous female pilot, takes off on the final leg of a record-breaking flight; but Earhart never arrives at her next stop: an island in the Pacific Ocean; the search for this flier has revealed conflicting stories.

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