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History's Greatest Mysteries, Loch Ness Monster, The
Season 4, Episode 1
HDWatch all available episodes of History's Greatest Mysteries Season 4
Despite centuries of sightings and searches, the most infamous deep-sea monster remains unidentified. Does the Loch Ness Monster really exist and, if so, what could it be?
Who Is The Zodiac Killer?In 1969, an unidentified serial killer taunted investigators with cryptic ciphers. Explore six theories that could help solve this 50-year-old mystery.
Assassination Of Jfk, TheIn 1963, President John F Kennedy is assassinated. A suspect is captured but investigators and amateur sleuths alike still investigate alternative theories.
Lost Colony Of Roanoke, TheIn 1587, settlers land on Roanoke Island to establish the first English colony in America, but vanish without a trace and leave only cryptic clues.
Phoenix Lights Phenomenon, TheDelve into the popular theories behind the Phoenix Lights phenomena, a series of widely sighted UFOs observed in Arizona and Nevada back in 1997.
Ark Of The Covenant, TheInvestigate the theories behind where the Ark of the Covenant - an artefact thought to be the most sacred relic of the Israelites - may be held or hidden.
'Missingest' Man In America, TheExplore the theories behind the disappearance of former New York Supreme Court judge Joseph Force Crater in 1930, a case which remains unsolved.
Decoding The Mysterious Antikythera MechThe discovery of an ancient device leads historians to theorise about the origins of the Antikythera mechanism.
Blackbeard's Lost TreasureAfter centuries of searching, Blackbeard's legendary hoard remains missing. As new evidence emerges, the mystery endures - what became of the treasure?
Puzzling Pyramids Of Egypt, TheDelve into the theories that could help explain why and how the ancient Egyptians came to build the pyramids.
Deadly Bermuda Triangle, TheExplore some of the many theories that could help explain why so many ships, planes and people go missing in the Bermuda Triangle.
Hunt For Stolen Nazi Treasure, TheDelve into the top theories of where the Nazis hid their wealth, much of which was stolen during World War II.
Search For Noah's Ark, TheExplore the most notable theories into the possible whereabouts of Noah's Ark, based on ancient accounts.
Who Is D.B. Cooper?Delve into the top theories surrounding the case of Dan Cooper, who hijacked a Northwest Orient Airlines flight, before disappearing without a trace.
Unlocking The Secrets Of StonehengeThe mysterious arrangement of stones found in the English countryside remains a mystery as to how - or why - the landmark was built.
Legend Of Bigfoot, TheThere have been thousands of alleged sightings of Bigfoot across the US, but despite growing evidence, the creature has never been officially identified.
Search For El Dorado, TheFor centuries, explorers put their lives on the line searching for the legendary ancient city of El Dorado, but will anyone ever find it?
Mysterious Havana Syndrome, TheExplore the top theories behind what caused the unexplained illnesses in US diplomats in 2017, later known as 'The Havana Syndrome'.
Unlocking The Secrets Of The Nazca LinesExplore the top theories behind why the ancient Peruvians built the Nazca Lines.
Hunt For Cleopatra's Missing Tomb, TheLook into the top theories behind where the tomb of Cleopatra may be located.
Twa Flight 800In 1996, one of the worst disasters in American history left 230 people dead and questions unanswered in a tragedy that changed the aviation industry forever.
Hunt For Hitler, TheThe history books say Adolf Hitler committed suicide in the final days of World War II, but did the Nazi leader die in Berlin or was he able to escape?
Lost Gold Of Wwii, TheExplore the top theories behind what happened to the treasure looted by the Japanese during World War II.
Gardner Museum RobberyIn 1990, thieves stole half a billion dollars in masterpieces from the Isabella Stewart Gardner Museum. Who orchestrated the infamous heist, and why?
Show more- About this episode
- Buried in Nevada's desert, Area 51 sparks wild theories of secret aircraft and alien tech, remaining one of America's most tightly guarded enigmas.
- CastRobert R. Cargill, Caroline Cory, Michael Dennin
- CrewOliver Twinch (Director)
- GenreFeatures, Factual
- Seasons4
- ChannelSky History
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