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Phil and Heather head to Belmonte Castle in La Mancha, Spain, said to be haunted by the Spanish Boogeyman. Inside the castle, they discover surprising secrets that reveal the truth behind the terrifying legend.

Expedition X

The Spanish Boogeyman

Explore your world with powerful and insightful news and information documentaries from the worlds of science, nature, medicine and outdoor adventure.

Discovery HD

Recent sightings of a massive bird and reports of missing livestock send Phil and Heather deep into western Pennsylvania. On the hunt for the legendary Thunderbird, they search for proof of the creature that has haunted legends for generations.

Thunderbird

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In Trinidad, Heather and Phil continue to confront terrifying claims of demonic possession and Obeah curses, tracing the sinister forces that locals say still grip the island.

Nightmare Island

Reports of shadowy figures and malevolent spirits from Caribbean folklore draw Phil and Heather to Trinidad. They explore a notorious plantation and an abandoned island once used as a leper colony, searching for the source of the chilling activity.

Terrors of Trinidad

Phil and Heather travel to Predjama Castle, which has been ruled by a brutal robber baron, who is feared for his cruelty; exploring the vast web of caves beneath the cliffside fortress, they seek clues that an ancient god of the underworld may be haunting the castle instead.

God of the Underworld

Phil and Heather board the USS Hornet, a haunted WWII aircraft carrier said to be crawling with spirits -- both good and evil. Exploring its shadowy decks, they confront eerie signs that the ship's sailors may still be guarding it from beyond the grave.

Terror Below Deck

Heather and Phil explore Ocracoke Island, where locals fear the ghost of Blackbeard is lingering; is the pirate's restless spirit protecting hidden treasure, or seeking vengeance upon the living?

Blackbeard's Ghost

In the forests of Washington's Columbia River Gorge, Phil and Heather hunt a monstrous black cat with an ape-like face. All clues lead to a nearby WW2-era nuclear facility that could be to blame -- but they must find the creature before it finds them.

Atomic Ape Cat

Heather and Jack Osbourne investigate Vulture City, Ariz., a ghost town with Gold Rush-era spirits; they explore possible ancient, darker forces.

Secrets of Vulture City

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Adventurer Josh Gates, scientist Phil Torres and paranormal researcher Jessica Chobot investigate reports of supernatural encounters, mysterious creatures and extraterrestrial phenomena.

S11 E4 | Terror Below Deck