Discovery Channel HD With word of an urgent lead, Josh jets to Poland to join in the opening of a secret Nazi tunnel system dug into a dormant volcano; Josh helps a local team tear away a stone wall built by the Germans in the last days of World War II. 2026-04-01 Part 2/2. Josh Gates rafts into an abandoned tunnel system to chase art and treasure stolen by the Third Reich; the diary of a high-ranking SS officer leads to a search for tons of stolen gold; Josh searches for a buried Nazi Enigma machine. 2026-04-01 Josh tracks down the legend and treasure of an outlaw posse, who terrorized the Midwest's railroads; Josh tracks the Reno Gang's lost loot to a cave hideout that could hold millions. 2026-04-01 Josh braves the frigid, shark-infested waters off Cape Cod to dive the world's only confirmed pirate wreck; joining a high-tech recovery mission, Josh chases the multi-million-dollar treasure of Black Sam Bellamy, including coins, gold and jewels. 2026-04-01 Josh chases the fortune stolen by loyalists to Britain's crown during the American Revolution; investigations of the infamous Doan Gang; Josh helps dig up a cache of plundered coins; a cave search pinpoints the turncoats' hideout. 2026-04-01 Was the Hindenburg truly destroyed by accident or by sabotage?; could the famous Patterson-Gimlin Bigfoot footage hold clues that only modern analysis can define?; what really happened when 50,000 Persian soldiers disappeared without a trace in 524 B.C.? 2026-04-02 Josh Gates travels through history on a search to uncover new evidence and answers to unexplained mysteries, and true stories that defy explanation, offering revelations and new insights. 2026-04-02 Examining major government conspiracies and coverups using New York Post resources. 2026-04-02 What really became of Konigsberg Castle's Amber Room, stolen by the Nazis? Could a lost hard drive in a British landfill hold millions in Bitcoin? Did King Solomon's legendary mines ever exist? 2026-04-02 Was the Hindenburg truly destroyed by accident or by sabotage?; could the famous Patterson-Gimlin Bigfoot footage hold clues that only modern analysis can define?; what really happened when 50,000 Persian soldiers disappeared without a trace in 524 B.C.? 2026-04-02 Josh Gates travels through history on a search to uncover new evidence and answers to unexplained mysteries, and true stories that defy explanation, offering revelations and new insights. 2026-04-02 Examining major government conspiracies and coverups using New York Post resources. 2026-04-02 What really became of Konigsberg Castle's Amber Room, stolen by the Nazis? Could a lost hard drive in a British landfill hold millions in Bitcoin? Did King Solomon's legendary mines ever exist? 2026-04-02 At his new dive site, Dustin is overpowered by the raging whitewater, leaving his life in his crew's hands; after heavy rain, Fred's crew fights zero visibility and has a deadly encounter 14 feet underwater. 2026-04-02 Tony Beets gambles millions to overhaul his operation; Rick Ness needs a wash plant that matches his big ambitions; Dave Turin hunts for new ground, and Fred Lewis finds his second season on thin ice. 2026-04-02 Joe tries to locate his new partner, who is on an uninhabited island off the coast of Panama. 2026-04-02 Joe and Matt battle darkness and risk drowning while trapped in a labyrinth of underground tunnels. 2026-04-02 Joe and Matt must descend slippery cliffs in extreme conditions. 2026-04-02 While stranded in Vietnam, Joe and Matt face the hottest month of the year in South East Asia. 2026-04-02 Joe and Matt hunt their target into unfamiliar territory. 2026-04-02 The Raneys return to Alaska to discover their own homestead is in utter disrepair; beetle kill has destroyed their only access, so they race to build a steel tram before the deep freeze sets in, but it may not be able to withstand a 7.2 earthquake. 2026-04-02 In Mississippi, the Raneys must first solve the mystery of flooding water before teaching a family of six to thrive off-grid together; builds include a new Elvis-inspired "Heartbreak Goat-tel" goat pen, garden compound and metal forge. 2026-04-02 The Raneys find a Montana homestead struggling with food, predator and power problems; Marty and Matt reunite them with old firefighter squadmates who help consolidate and build out a couple's homestead for safety and accessibility. 2026-04-02 The Raneys find an Idaho family struggling to survive in a geodesic dome home on the edge of a cliff; while Marty brings them water and Misty builds an innovative garden greenhouse, Matt and a local tracker corner a dangerous predator in a tree. 2026-04-02 Matt and his troops head to the Pacific Northwest to search a three-barn hoard loaded with U.S. military treasures, including Willy's Jeeps and uniforms; a biohazard mess hides first-generation computers and video equipment at a second location. 2026-04-02 Matt hunts for rare liquor, hand-rolled cigars and vintage drums in two California hoards; when the owners refuse to part with key items, Matt's bottom line is threatened. 2026-04-02 Taking a big risk, Matt tackles two out-of-control California hoards; it's a race against the clock as Matt hunts for classic motorcycles in a toxic hoard and then chases rare, high-priced toys in a property across the state. 2026-04-03