Hunt for World War II Hellships
Josh searches for lost Allied soldiers on the Hofuku Maru, a Japanese Hellship.
2026-06-24 42mNow playing
Season 18 · 7 episodes · 1 credit each
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Episodes · Season 18
7 episodes in this season
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.
2026-07-01 42m
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.
2026-07-08 42m
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.
2026-07-15 42m
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.
2026-07-22 42m★ 6.5
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.
2026-08-05 42m
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.
2026-08-12 42mSeason 18 FAQ
How much does Expedition Unknown season 18 cost?
Each episode costs 1 credit. Credits are $1 each, and unlocked episodes stay in your account permanently.
Do I need an account to watch Expedition Unknown?
Yes. Create an account and add credits before unlocking an episode. Signing up is free.
How many episodes are in Expedition Unknown season 18?
This season has 7 episodes. They are listed in order below and the player advances automatically when an episode ends.