S4.E1 ∙ The Wild WestSun, Aug 1, 2021Uncovered clues from a famous Montana battleground, a 19th-century steamboat and a frontier ghost town reveal surprising truths about the Wild West.7.5/10 (24)Rate
S4.E2 ∙ The Battle for the Black SwanSun, Aug 1, 2021Archaeologists and treasure hunters battle it out over half a billion dollars worth of gold and silver. Who will win the Battle for the Black Swan?7.5/10 (27)Rate
S4.E3 ∙ Arctic WarSun, Aug 1, 2021From a long lost US base beneath the Arctic ice cap, to a sunken Soviet submarine, the Cold War's toxic legacy is both fascinating and terrifying.7.8/10 (12)Rate
S4.E4 ∙ HollywoodSun, Aug 8, 2021From a buried film set to a WW1 Navy ship and old fishing barge, we discover the role these ruins played in Hollywood movie-making history.7.6/10 (22)Rate
S4.E5 ∙ The First AmericansSun, Aug 8, 2021Clues from a 13,000-year-old skeleton and a submerged coastline reveal surprising insights about the first humans to arrive in the Americas.8.1/10 (19)Rate
S4.E6 ∙ Venice's Lost EmpireSun, Aug 8, 2021A 14th-century galley entombed in mud, a 16th-century hoard of luxury cargo, and a gruesome discovery reveal the rise and fall of the Venetian Empire.7.7/10 (18)Rate
S4.E7 ∙ The Mississippi RiverSun, Aug 15, 2021From a steamboat in a cornfield to the true story behind Hurricane Katrina's floods, new discoveries reveal how the Mississippi river shaped America.7.8/10 (16)Rate
S4.E8 ∙ Hurricane ApocalypseSun, Aug 15, 2021Remnants of colonization attempts, a revolutionary refugee ship and submerged subway cars reveal hurricanes' impacts on America's past and its future.7.8/10 (17)Rate
S4.E9 ∙ The Great Barrier ReefSun, Aug 22, 2021The mysterious sinking of Australia's "Titanic", a warship on a dangerous mission, and a ROV expedition searching for clues at the bottom of the reef.7.9/10 (15)Rate
S4.E10 ∙ Sea of SecretsSun, Aug 22, 2021The Black Sea is a place of myth and legend and ships have sailed on its waters for millennia. Three wrecks unlock secrets of this mysterious sea.7.8/10 (14)Rate