Expedition Unknown: Season 18
Season 18 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Picks up essential narrative continuity directly following the events of Expedition Unknown Season 17.
- Character alliances, factions, and personal loyalties undergo significant shifts under escalating stakes.
- Addresses unresolved cliffhangers and thematic mysteries introduced during previous seasons.
- Establishes the primary seasonal conflict that drives serialized character arcs toward the finale.
Episode Guide
Season 18 Progress Shield
Hunt for World War II Hellships
Jun 24, 2026 · 42 min
Josh searches for lost Allied soldiers on the Hofuku Maru, a Japanese Hellship.
Finding World War II's Lost Prisoners
Jul 1, 2026 · 42 min
A deep-water dive leads to the historic discovery of a lost WWII hell ship, where an estimated 1,000 soldiers made the ultimate sacrifice. Given rare access, Josh assists a U.S. De
Death Jars of Laos
Jul 8, 2026 · 42 min
Josh Gates treks into the remote jungles of Laos to investigate the mysterious Plain of Jars. Navigating landscapes still littered with unexploded ordnance, he uses advanced techno
Sunken City of Pirates
Jul 15, 2026 · 42 min
A first-of-its-kind sonar survey reveals a submerged pirate lair located off the coast of Jamaica. Using groundbreaking photogrammetry, Josh dives in to hunt for the $50M stolen tr
Secrets of Mexico's Underworld
Jul 22, 2026 · 42 min
Josh joins archeologists as they bushwhack through thick jungles and rappel into vast caves in search of the lost Zoque culture. Deep underground, the team pushes through flooded s
Inca Treasure Tunnels
Aug 5, 2026 · 42 min
Josh helps discover and explore a labyrinth of lost tunnels; he dodges traffic to assist in a first-ever radar scan below the busy streets of Cuzco, Peru; he joins them as they pus
Chasing Civil War Gold
Aug 12, 2026 · 42 min
Josh hunts for millions in missing Confederate gold. First, he follows a new lead and explores a wagon train robbery site where gold and silver coins vanished. Then, an eyewitness