The BEST episodes of History's Greatest Mysteries season 6
Every episode of History's Greatest Mysteries season 6, ranked from best to worst by thousands of votes from fans of the show. The best episodes of History's Greatest Mysteries season 6!
Investigate a wide range of historically compelling topics and the mysteries surrounding each including the Titanic, D.B. Cooper, Roswell, John Wilkes Booth, and more. Each program within the franchise will showcase fresh, new evidence and perspectives including never-before-released documents to the general public, personal diaries and DNA evidence to unearth brand-new information about these infamous and enigmatic chapters in history.

#1 - Roswell
Season 6 - Episode 1 - Aired 1/27/2025
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?
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#2 - The Final Flight of Amelia Earhart
Season 6 - Episode 5 - Aired 3/3/2025
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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#3 - The Valentine's Day Massacre
Season 6 - Episode 3 - Aired 2/10/2025
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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#4 - The Franklin Expedition
Season 6 - Episode 2 - Aired 2/3/2025
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 leading to unthinkable ends. What really killed the men of the Franklin Expedition?
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#5 - What is the Yeti?
Season 6 - Episode 4 - Aired 2/24/2025
Sightings of the Yeti, a creature of myth and legend, has been recorded for thousands of years throughout the Himalayas and surrounding regions; a seven-foot-tall creature, covered in shaggy gray hair is hiding in plain sight.
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#6 - The Death and Fortune of Pablo Escobar
Season 6 - Episode 6 - Aired 3/10/2025
Pablo Escobar, the narco-trafficker who single-handedly supplied most of America's cocaine in the 1980s, had billions of dollars in cash; by the time he was gunned down in 1993, it's believed he was worth over $50 billion in today's money.
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