Science Channel HD Meriwether Lewis was the man who teamed with William Clark to map the lands west of the Mississippi, but he died in mysterious circumstances; experts reveal a vast conspiracy that could prove that one of America's greatest explorers was murdered. 2026-04-02 New discoveries at the site of an alleged long-lost gold mine could lead investigators to a $200 million payday; experts use cutting-edge tech to investigate clues in long-lost maps and relics to recover the Lost Dutchman's treasure. 2026-04-02 New evidence from one of the world's oldest maps offers clues to a long-lost civilization of untold treasure, and this cutting-edge expedition might finally prove that this mysterious kingdom is the ancestral home of the ancient Egyptians. 2026-04-02 A deserted facility in the remote countryside features mysterious graffiti that may be highly advanced mathematical equations pointing to a dark secret; experts investigate this classified military wasteland with a deadly past. 2026-04-02 Remnants of a town in the remote backwoods of Kentucky suggest a forgotten tale of catastrophe and devastation; experts investigate and uncover the history of a deadly industrial mining complex. 2026-04-02 An underground labyrinth once used by a secret police force could warp the mind and turn friend into foe; experts turn up new evidence pointing to madness, murder and mayhem, revealing what happened in these cursed tunnels and why it was abandoned. 2026-04-03