This season, Josh Gates connects with innovative researchers and uses cutting-edge technology to tackle history's most challenging mysteries. The search for answers - and adventure - will take him into the most extreme climates on the planet, as he braves sub-zero temperatures to snowmobile across the Siberian Tundra investigating one of the coldest cases of the Cold War: the baffling deaths of nine hikers on Russia's infamous Dead Mountain. Josh also takes on the scorching heat of the Negev Desert as he descends into newly discovered caves and tunnels that could hold the next Dead Sea Scrolls. In addition, Gates dives into the waters of Panama and the mysteries of Sir Frances Drake's lost fortune. And, bushwhacking into the rainforest of Puerto Rico, Josh pushes his limits (and the boundaries of science) to explain the infamous cryptid, the Chupacabra.

Josh Gates travels to the Holy Land to unearth the mystery of the Dead Sea Scrolls with an archaeologist who has discovered new ones; Josh sees cutting-edge technology restore scroll fragments in a way that could change how people read the Bible.

Josh Gates investigates a unique Dead Sea Scroll etched with riddles that could lead to an ancient treasure. Following new leads, Josh treks into the punishing Jordanian desert in search of the potential fortune.

Josh Gates searches land and sea for the lost fortune of legendary pirate Sir Francis Drake. Joining treasure hunters and maritime archaeologists, Josh hunts for a lost cache of Spanish gold and the remains of Drake himself.

Braving the sub-zero conditions of Siberia, Josh Gates investigates one of the strangest and most brutal cold cases: the Dyatlov Pass Incident. Nine Soviet hikers died suspiciously. Sixty years later, no one knows how or why.

Josh Gates concludes his in-depth investigation of the Dyatlov Pass Incident. Taking on Dead Mountain's brutal conditions, Josh and two investigators re-trace the last steps of the hikers. A big discovery could finally solve the mystery.

Josh Gates sets sail for Florida chasing the long-lost treasure of bloodthirsty pirate Jose Gaspar; Josh joins marine archaeologists and treasure hunters working to crack the mysteries of the pirate's life so they can find the riches he left behind.

In the dark caves and thick jungles of Puerto Rico, Josh Gates tracks a modern-day mystery - the Chupacabra. Working with a wildlife biologist, a veterinarian and an investigator, Josh explores a recent wave of attacks to separate fact from fiction.

Josh Gates returns to Guatemala with a potential breakthrough in the search for a Snake King tomb.

Josh Gates is on a nation-wide treasure hunt to solve a mystery no one has cracked for 40 years: The Secret. Josh travels coast-to-coast and back in time using cutting edge augmented reality and tapping into a network of obsessed Secret detectives.

Josh Gates has a fresh lead on the massive lost treasure of the shipwrecked 1715 Spanish fleet. Josh returns to the waters of Florida's Atlantic coast and dives in with a new expedition that uses the latest high tech to locate the fleet's flagship.

Four years after Josh Gates went on a journey to find the lost heart of Sultan Suleiman the Magnificent, he travels to the newly rediscovered town of Turbek for some shocking new revelations about the case.

Breaking news sends Josh Gates racing across the globe. One of the wickedly hard puzzles of The Secret, which Josh has been chasing for years, might have been solved. He's been crisscrossing the US, but this solution is in Josh's hometown.