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Nearly 150 years ago, two fishermen hauled to shore a sea monster they caught off the coast of Cornwall, England. As strange sightings of the creature continued over the decades, public curiosity turned into spectacle. Whatever it was — prehistoric remnant, or rare marine animal — perhaps it could be summoned… by a wizard.

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Before and during WWII, the Nazis stole a fortune in priceless art. Among them was a portrait that’s been called “the Mona Lisa of Austria” — a luminous piece by Gustav Klimt completed in 1907. Placed in the Austrian National Gallery, the artwork’s rightful heir fought for years to reclaim it.

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In 1994 an art dealer representing an anonymous client sold a rare painting to a New York gallery. There was only one problem: It was a fake. Yet for years, the paintings kept coming, the deals kept closing, and no one was the wiser.

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Art dealer Yves Bouvier revolutionized the fine art business. His clientele included oligarchs, billionaires, or any other buyer who required discretion. Then he used the industry's need for secrecy and anonymity to steal a fortune without his clients noticing.

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After an ethereal painting of Jesus Christ fetches a record-breaking bid in a 2017 auction, doubts about its authenticity shroud the work in controversy. Is “Salvator Mundi” a Da Vinci original, done by the hand of the master himself? How did it become so exorbitantly expensive? And with its present whereabouts unknown, where is the work now?

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After years of research, Dr. Maria Reiche formed one mainstream idea about how and why the Nazca Lines were made. But who were they made for? In the 1960s, Swiss author Erich Von Daniken proposed a theory: that aliens visited our ancestors and imparted onto them the knowledge needed to create our greatest earthly treasures. Most experts ignored these claims. Others believed he was on to something...

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Discovered in the early 20th century, the Nazca Lines are a group of vast, mysterious formations in Peru’s Nazca Desert. For years, archaeologist Maria Reiche researched the origins of these geoglyphs, ultimately determining how and why they were built. But who were they a message for?

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In Australia, the Aboriginals speak of a man-eating aquatic beast who will punish anyone who abuses its waters. Over the years, descriptions of the Bunyip’s appearance have varied wildly, calling into question: is this legendary creature an unseen threat... or just a myth?

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On the night of August 21, 1986, approximately 1,800 people died in the West African villages surrounding Lake Nyos. Surviving villagers battled a range of ailments, claiming to have seen a thick white blanket hovering above the lake before falling ill. In the wake of the tragedy, questions arose... Was this the result of a secret weapons test? A natural occurrence? Or a supernatural force?

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The New York World’s Fair was intended to be an example of peace and unity between nations during a time of war. A year after the bombing, the police and FBI were still on the hunt for who caused the tragedy. Focus was now on international enemies... and supposed allies.

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