TV seriesDocumentaryRealityAction & Adventure
Expedition Unknown Season 18
2015– 18 seasons 168 episodes 48 min TMDB 8.1
The adventures of Josh Gates as he investigates unsolved iconic stories across the globe.
Air timeline
2015–2026Seasons
Season 1820267 episodesTMDB 6.5
Where to watch
- 7Chasing Civil War Gold2026-08-12 · 42 min
S18E07 · Season 18
Chasing Civil War Gold
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 account points to the location of Jefferson Davis's lost war chest.
- 6Inca Treasure Tunnels2026-08-05 · 42 min
S18E06 · Season 18
Inca Treasure Tunnels
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 push into the tunnels and find priceless ancient treasures.
- 5Secrets of Mexico's Underworld2026-07-22 · 42 min
S18E05 · Season 18
Secrets of Mexico's Underworld
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 sections and finds thousands of ritual offerings that may solve the mystery.
- 4Sunken City of Pirates2026-07-15 · 42 min
S18E04 · Season 18
Sunken City of Pirates
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 treasure of Black Bart, the King of Pirates.
- 3Death Jars of Laos2026-07-08 · 42 min
S18E03 · Season 18
Death Jars of Laos
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 technology to uncover the secrets of this ancient, lost civilization.
- 2Finding World War II's Lost Prisoners2026-07-01 · 42 min
S18E02 · Season 18
Finding World War II's Lost Prisoners
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. Department of Defense mission, recovering potential remains of American POWs.
- 1Hunt for World War II Hellships2026-06-24 · 42 min
S18E01 · Season 18
Hunt for World War II Hellships
Josh searches for lost Allied soldiers on the Hofuku Maru, a Japanese Hellship.
