The BEST episodes of The UnXplained
Every episode of The UnXplained ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of The UnXplained!
The UnXplained explores the world’s most fascinating, strange and inexplicable mysteries. Scientists, historians, witnesses and experiencers, each seeking to shed light on how the seemingly impossible actually can happen, explore subjects that have mystified mankind for centuries — from mysterious structures and so-called “evil” places, to strange creatures and bizarre rituals.
#2 - The World's Deadliest Assassins
Season 7 - Episode 17 - Aired 10/17/2025
From lone operatives to agents of powerful regimes, assassins have left a trail of disruption that echoes through time; are assassins merely footnotes in history, or have they steered the destiny of civilization all along?
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#4 - Mad Scientists
Season 7 - Episode 13 - Aired 7/25/2025
Throughout history, there have been men of science who pushed the boundaries of experimentation to the edge of madness. They were renegades known for bizarre and often unethical experiments involving human-animal hybrids, mind control devices, and even unimaginable torture. What led these mad scientists down a strange, dark path in their pursuit of knowledge?
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#5 - Unbreakable Codes
Season 6 - Episode 8 - Aired 12/8/2023
There's nothing more fascinating than a code that can't be cracked. For centuries, mankind has devised ingenious ways to hide valuable information--using everything from enigmatic puzzles, to complex ciphers and secret symbols. If history's unbreakable codes can be deciphered...could we unlock answers to some of the greatest mysteries of both the past and present?
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#6 - Impossible Ancient Structures
Season 8 - Episode 1 - Aired 1/16/2026
All over the world stand ancient structures so massive, precise, and baffling that they seem impossible for not just their time, but ours as well; from colossal walls and giant stone tombs to temples carved from solid rock, how did ancient civilizations achieve feats of engineering that still defy modern understanding?
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#7 - Mysterious Urban Legends
Season 7 - Episode 12 - Aired 7/18/2025
Urban legends are modern folklore rooted in mystery where chilling tales merge fact and fiction and blur the line between myth and reality. From the eerie reports of spontaneous human combustion and the hunt for the Highgate Vampire, to the unsettling boogeymen known as the Men in Black appearing after UFO sightings, could these thrilling legends, echoed over generations and believed by many, be more than just stories?
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#8 - Strange Stories of World War II
Season 6 - Episode 9 - Aired 12/15/2023
World War II was the largest, and deadliest, conflict in human history. From 1939 until 1945, more than fifty nations engaged in harrowing combat--and during that time, a number of intriguing and persistent mysteries were born. Nearly eighty years later, curious stories about everything from lost gold to secret societies and highly-advanced technology remain unexplained. Can new information help us better understand the strangest tales of the Second World War?
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#10 - Bizarre Afflictions
Season 6 - Episode 6 - Aired 11/17/2023
Throughout history, tales of inexplicable maladies to both the body, and the mind, have stirred morbid curiosity and palpable fear. From mysterious wounds that appear for no apparent reason--to a peculiar madness that compels people to dance themselves to death. Are these bizarre afflictions merely fabrications of the mind? Or could they arise from unseen forces that are beyond our comprehension?
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#11 - Mysterious Structures
Season 1 - Episode 2 - Aired 7/26/2019
For centuries, archaeologists have tried to unravel the mysteries of how and why certain incredible structures like the Great Pyramid at Giza, the staircase at Loretto Chapel, and Coral Castle were built.
#13 - Monsters Among Us
Season 6 - Episode 10 - Aired 12/22/2023
Since the dawn of humanity, tales of monstrous creatures lurking in the shadows of our world have sparked both fascination and fear. Today, we often dismiss these accounts as the stuff of myth and legend, but are we overlooking a potentially terrifying reality? With scientists discovering as many as 18,000 new animal species every year, isn't it conceivable that there could be real-life, flesh and blood monsters living among us?
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#14 - The Golden Age of Pirates
Season 7 - Episode 1 - Aired 10/4/2024
During The Golden Age of Piracy, thousands of buccaneers terrorized the high seas and became legends. Their exploits spawned fantastic stories of larger-than-life characters, billion dollar heists, and buried treasure that to this day, has never been found. Are these stories simply tall tales, or is the truth stranger than fiction?
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#15 - The Weird Wild West
Season 4 - Episode 20 - Aired 12/2/2022
The American frontier is full of legends of cowboys, Native Americans, and outlaws. But there are also many eerie stories of cursed mountains, monsters and even UFOs. Could these tales be true? Is the Wild West much stranger than commonly though?
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#16 - Mysteries of the Underground
Season 7 - Episode 18 - Aired 10/31/2025
Beneath our feet lie hidden ancient tunnels, sacred caves and shadowy passages into a world of darkness shaped by nature, carved by man and steeped in myth; seeing if the underground realms are mere remnants of the past or they guard secrets.
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#17 - Strange Tales from the American Frontier
Season 7 - Episode 14 - Aired 8/1/2025
From the 17th to the early 20th century, America saw an unprecedented era of rapid western expansion. Millions moved west to lay claim to find their fortunes in gold and land for the taking in search of the American Dream.
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#20 - Tales of the Dearly Departed
Season 5 - Episode 2 - Aired 4/7/2023
For over 100,000 years, humans have found ways to lay the dead to rest. Graves, tombs, cremations are all considered respectful ways to provide the deceased with a final resting place. Can some of these practises can preserve the soul for eternity?
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#21 - Unnatural Nature
Season 1 - Episode 4 - Aired 8/9/2019
Many mysteries of planet Earth are far from understood. How was Devil's Tower formed? Or why do some people get struck by lightning multiple times? While some may write off these as random occurrences, might they instead point to a new understanding of not only our planet's past - but also its future?
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#22 - Secrets of the Spies
Season 7 - Episode 10 - Aired 6/27/2025
Throughout history, powerful nations around the world have enlisted spies to serve as unique tools of warfare. These secret agents are often tasked with infiltrating organizations, gathering sensitive information, and even performing the act of assassination. The most successful spies are the ones whose secrets are only revealed years after their mission has ended, or sometimes, never at all.
#23 - The Search for King Arthur
Season 4 - Episode 12 - Aired 6/24/2022
King Arthur, England's first pop culture superhero; his exploits inspired blockbuster movies and television series like "Middle Earth", "Harry Potter", "Game of Thrones" and "Star Wars"; the significant impact of Arthurian legend on Western culture.
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#24 - Incredible Survivors
Season 1 - Episode 8 - Aired 9/6/2019
A look at how some people live through the impossible such as plane crashes, freezing temperatures, or performing superhuman feats while in danger; remarkable tales of human survival force others to reconsider what is known about the will to live.
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#25 - Extraordinary Structures
Season 5 - Episode 9 - Aired 6/9/2023
Throughout the world, there are ancient structures that defy explanation because even with today's technology they would be nearly impossible to duplicate. How were ancient civilizations able to build such extraordinary structures? And what purpose did they serve?
Watch Now:Amazon