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Expedition Files Season 4 Episodes

Season 4 Episode Guide

12 Episodes 2026 - 2026

Episode 1

Mysteries of American History

Wed, Apr 1, 202642 mins

Josh Gates explores three mysteries woven into the fabric of American history, digging beneath the official record to reveal how our country's past may be far more complicated than the stories we've been taught. What really happened to the USS Scorpion, a U.S. Navy submarine that disappeared during the height of the Cold War? Who truly sounded the legendary alarm that helped ignite the Revolutionary War, and does new research change the story of Paul Revere's famous midnight ride? And finally, a shocking theory surrounding John Wilkes Booth, America's most infamous assassin. Could he have escaped justice only to meet a far stranger fate than the one recorded in the history books?

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Episode 2

Deadly Forecast

Wed, Apr 8, 202642 mins

From pioneers trapped in Sierra Nevada blizzards, to a secret Arctic missile base entombed in ice, and a ghost ship adrift in the Atlantic, Josh Gates explores three mysteries shaped by extreme weather: the disappearance of the Donner Party, Cold War secrets, and the Mary Celeste.

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Episode 3

Fateful Coverups

Wed, Apr 15, 202642 mins

From a secret World War II unit that deceived Nazis, to the alleged crimes of the Knights Templar, and a royal death tied to a scandal, Josh Gates explores mysteries built on coverups. Was the truth buried to protect power, reputation, and empires?

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Episode 4

Under Pressure

Wed, Apr 22, 202642 mins

Josh Gates reopens cases where the truth stayed buried, he exposes new clues, shaken alibis, and explosive revelations that challenge everything that we thought we knew about Noah's Ark, the terror of anthrax attacks, and Bugsy Siegel's murder.

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Episode 5

Dark Waters

Wed, Apr 29, 202642 mins

Josh Gates investigates three aquatic mysteries: the Kraken, Lake Lanier and Atlantis. From terrifying sailor lore, to a deadly lake's dark past, and a lost city beneath the sea, he searches for evidence behind legends shaped by fear, myth and history.

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Episode 6

Fact or Fiction?

Wed, May 6, 202642 mins

Josh Gates investigates Dracula, Cold War psychic spying, and Spartacus. From Vlad the Impaler's infamous reign of terror to secret U.S. mind-control tests and a gladiator who defied Rome, he seeks the historical truths behind legends that refuse to die.

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Episode 7

Truth Vs. Tabloids

Wed, May 13, 202642 mins

Josh Gates investigates Jim Morrison's death, a "mermaid" in a Japanese temple and an alien abduction claim. From a rock legend's mysterious disappearance, to a bizarrely preserved creature, and a U.S. Airman's extraterrestrial encounter, he seeks the truth behind these unexplained stories.

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Episode 8

Who Done It?

Wed, May 20, 202642 mins

Josh Gates investigates three of history's most baffling mysteries, uncovering the culprits behind the suspected murder of explorer Meriwether Lewis, a possible United Nations plot around Dag Hammarskjöld's 1961 plane crash, and the vanishing of Joseph Crater, a New York judge.

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Episode 9

Larger Than Life

Wed, May 27, 202642 mins

Josh Gates explores larger-than-life legends, including the "King of Pirates" Henry Every's $400M heist and disappearance; the palace harem's conspiracy plot behind Pharaoh Ramesses III's death; and new evidence that the fabled Amazons, a civilization of fierce female warriors, truly existed, and were more than mere myth.

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Episode 10

You Don't Know Me

Wed, Jun 3, 202642 mins

Josh Gates explores hidden identities, from a 50-year-old cold case about a mysterious woman, new evidence that could rewrite the account of Judas' betrayal of Jesus, and the shocking tale of a teenager claiming to be a lost German prince.

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Episode 11

The Supernatural

Wed, Jun 10, 202642 mins

Josh Gates explores the supernatural, from Nikola Tesla's mysterious "Death Ray" to an encoded message from a Sicilian nun believed to be of demonic origin. Plus, scientists uncover the real explanation behind the Oracle of Delphi's prophetic visions.

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Episode 12

Smoke and Mirrors

Wed, Jun 17, 202642 mins

Josh Gates explores how new evidence reshapes history's mysteries, a fresh analysis of Edgar Allan Poe's death, a novel take on Ponce de León's quest for the Fountain of Youth, and DNA evidence reviving the murder case of Dr. Hawley Harvey Crippen's wife.

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