On October 4, 2026
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History's Greatest Mysteries — Season 4
#Episode nameAir dateRuntimeRating
01
41mThe Loch Ness MonsterFor centuries, tales of a creature lurking in the deep have persisted, yet one of the most celebrated mysteries of the ocean remains unsolved. With each new piece of evidence, the enigma deepens: does the Loch Ness Monster truly exist? And should it, then what form does it take?Jan 30, 20237.0Jan 30, 202341m7.002
42mWho is the Zodiac Killer?Northern California was gripped by fear in 1969, as a notorious serial killer stalked the region. He engaged in a chilling game of cat and mouse with law enforcement, communicating through enigmatic ciphers and cryptic clues that fueled a decades-long mystery. For over fifty years, the identity of this elusive perpetrator has remained unknown, leaving investigators and the public alike to ponder his true nature. Might recent discoveries in evidence and technology finally unlock the secrets of thFeb 6, 20237.0Feb 6, 202342m7.003
42mThe Assassination of JFKThe assassination of President John F. Kennedy on November 22, 1963, sent shockwaves through the country, leaving a deep wound in the national psyche. Though a suspect was apprehended early on, persistent doubts lingered, fueling speculation that the full truth remained concealed. For decades, investigators and those captivated by the mystery have tirelessly sought answers, piecing together fragments of evidence in a relentless pursuit of understanding.Feb 13, 20237.0Feb 13, 202342m7.004
41mThe Lost Colony of RoanokeIn 1587, a band of colonists arrived on Roanoke Island, off the coast of North Carolina, with the intent to found England’s first colony in the New World. Yet, within a few short years, the 115 men, women, and children who settled there disappeared entirely, leaving behind only enigmatic signs. The quest to understand their fate has persisted for more than four centuries. Might modern technology finally reveal what befell the Lost Colony of Roanoke?Feb 20, 20237.0Feb 20, 202341m7.005
40mThe Phoenix Lights PhenomenonIn the year 1997, a multitude of observers in Phoenix reported unusual lights in the sky—an event that sparked speculation of a possible Unidentified Flying Object sighting.Feb 27, 2023Feb 27, 202340m06
41mThe Ark of the CovenantFor over two millennia, one of the Bible’s most revered and potent relics has remained lost. Though some maintain the Ark of the Covenant was destroyed, many believe it persists in some hidden place. Might recent discoveries finally illuminate the Ark's fate, and guide us to its location?Mar 5, 20235.0Mar 5, 202341m5.007
41mThe "Missingest" Man in AmericaThe year was 1930. A New York Supreme Court justice, deeply entwined with Tammany Hall and destined to become President Franklin Delano Roosevelt, exited a steakhouse and vanished. The case, steeped in political intrigue, captivated the nation and has remained stubbornly unsolved for nearly a century. Now, a purported deathbed confession offers a tantalizing glimpse into the fate of the notorious Judge Joseph Crater.Mar 12, 20235.0Mar 12, 202341m5.008
41mBlackbeard's Lost TreasureBlackbeard, perhaps the most infamous pirate of all time, is rumored to have amassed a fortune worth millions. For centuries, treasure hunters have sought the legendary hoard, but it remains lost. With each new discovery, the enigma deepens: what ultimately happened to Blackbeard’s missing riches?Mar 19, 20235.0Mar 19, 202341m5.009
41mDecoding the Mysterious Antikythera MechanismDiscovered aboard a shipwreck dating back two millennia, a complex mechanical device has been hailed as the world's earliest computer. The artifact’s sophistication surpasses even the most optimistic estimations of historians, yet its origins and intended function remain enigmatic. Might contemporary technology at last illuminate the true nature of the mysterious Antikythera Mechanism?Mar 26, 20235.0Mar 26, 202341m5.010
41mThe Puzzling Pyramids of EgyptThe pyramids of Egypt inspire awe and mystery, standing as profound wonders of the ancient world. Over four thousand years old, these architectural marvels are celebrated for their grandeur, yet the precise methods of their construction and the motivations behind them remain largely unknown.Apr 16, 20235.0Apr 16, 202341m5.011
41mThe Hunt for Stolen Nazi TreasureIn the turmoil of World War Two, the Nazis systematically pilfered immense quantities of art, gold, silver, and currency, concealing their ill-gotten gains throughout Europe. Though some of this stolen wealth has since been recovered, a significant portion remains unaccounted for, lost to time nearly eighty years on.Apr 23, 20236.0Apr 23, 202341m6.012
41mThe Deadly Bermuda TriangleThe Bermuda Triangle, a vast expanse of half a million square miles in the Atlantic, has long been associated with inexplicable disappearances. Ships, aircraft, and their passengers have vanished within its boundaries, leaving behind only unanswered questions. This exploration examines potential explanations for these enduring mysteries.Apr 30, 2023Apr 30, 202341m13
41mThe Search for Noah's ArkA cornerstone of biblical narrative, the story of Noah's Ark has resonated for millennia. Yet, despite its enduring presence in human culture, the fate of the ark itself remains largely unknown.May 7, 20235.0May 7, 202341m5.014
40mWho is D.B. Cooper?The disappearance remains the singular enigma in the history of air piracy. In 1971, a man commandeered a Northwest Orient Airlines flight, issuing a demand for four parachutes and two hundred thousand dollars. He then leaped from the aircraft with the ransom, and was never seen again.May 14, 20235.0May 14, 202340m5.015
41mThe Legend of BigfootFor decades, countless individuals have insisted on sightings of the legendary North American cryptid, Bigfoot. Yet, despite a growing collection of purported evidence and persistent scrutiny of photographic material, the creature remains officially unconfirmed, its existence shrouded in enduring mystery.May 21, 20237.0May 21, 202341m7.016
40mUnlocking the Secrets of StonehengeA silent testament to a vanished people, the stone circle stands as one of the most renowned prehistoric monuments on Earth. For countless generations, it has graced the English countryside, its purpose and construction shrouded in an enduring mystery. The methods employed in raising these massive stones, and the beliefs that inspired their placement, remain unknown to us.May 28, 20236.0May 28, 202340m6.017
41mThe Search for El DoradoLegend whispers of an ancient city, a place said to be laden with gold. For centuries, explorers have risked everything in pursuit of its fabled riches. And still, the relentless search for this infamous city persists: will anyone ever succeed in unearthing its secrets?Jun 4, 20236.0Jun 4, 202341m6.018
41mThe Mysterious Havana SyndromeIn 2016, a perplexing illness began to affect dozens of Cuban government officials. Over the following years, the number of cases climbed to the hundreds. Yet, inquiries into this unusual outbreak yielded more uncertainty than clarity. What is the definitive cause of this peculiar affliction, now termed "Havana Syndrome?"Jun 10, 20236.0Jun 10, 202341m6.019
40mUnlocking the Secrets of the Nazca LinesOften described as the world's greatest archaeological puzzle, the Nazca Lines are a series of 2,000-year-old geoglyphs etched into the Peruvian desert, stretching for over fifty miles. Their sheer scale renders them visible only from above. Will recent research at last reveal their secrets? What was the true intention behind these remarkable figures?Jun 24, 20236.0Jun 24, 202340m6.020
42mThe Hunt for Cleopatra's Missing TombThe final pharaoh of Egypt, and a queen whose legend echoes through millennia, Cleopatra’s death in 31 B.C. remains one of history's enduring enigmas. For over two thousand years, her body and final resting place have vanished without a trace, perplexing the world's foremost archaeologists. Might fresh discoveries at last reveal the location of Cleopatra’s lost tomb?Jul 9, 20235.0Jul 9, 202342m5.021
42mTWA Flight 800The summer of 1996 witnessed a catastrophe that ranks among the most devastating in American aviation history. Two hundred and thirty souls perished in the crash, leaving behind a cloud of unanswered questions and a profound alteration to the industry itself. The event cast a long shadow, irrevocably shaping the future of flight.Jul 16, 20237.0Jul 16, 202342m7.022
42mThe Hunt for HitlerHistory records indicate that Adolf Hitler took his own life in the waning days of World War II. However, doubts persist regarding the completeness of the evidence; speculation about a possible escape has lingered for decades.Jul 23, 20236.0Jul 23, 202342m6.023
42mThe Lost Gold of WWIIIn the wake of World War II, Japan seized a vast treasure – a fortune estimated at hundreds of billions of dollars – from nations under its control. The location of this wealth remains a mystery to this day.Jul 30, 20235.0Jul 30, 202342m5.024
41mThe Black DahliaThe murder of a young woman, a brutal act that cast a long shadow over American history, remains one of its most chilling unsolved mysteries. A succession of enigmatic figures have been implicated over the years, each shrouded in an aura of perplexing secrecy. Will the enduring questions surrounding this notorious case at last find resolution?Aug 6, 20237.0Aug 6, 202341m7.025
42mGardner Museum RobberyThree decades have passed since the audacious theft from the Isabella Stewart Gardner Museum in Boston, a crime in which masterpieces worth half a billion dollars vanished. Despite exhaustive investigations, the stolen artworks remain missing.Aug 13, 20235.0Aug 13, 202342m5.0
