Season 4
12 episodes · Apr 1, 2026
Season Videos
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S4E1Mysteries of American History
Apr 1, 202643mJosh Gates explores American history, including a shocking theory that John Wilkes Booth escaped justice -- only to meet a far stranger fate. Learn myth-busting truths behind Paul Revere's midnight ride and a U.S. Navy sub that vanished in the Cold War.
S4E2Deadly Forecast
Apr 8, 202642mJosh Gates explores three mysteries shaped by extreme weather, the disappearance of the Donner Party in Sierra Nevada blizzards, secrets of an Arctic missile base entombed in ice, and the Mary Celeste. a ghost ship adrift in the Atlantic.
S4E3Fateful Coverups
Apr 15, 202642mFrom 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?
S4E4Under Pressure
Apr 22, 202642mJosh 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.
S4E5Dark Waters
Apr 29, 202642mJosh 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.
S4E6Fact or Fiction?
May 6, 2026Josh Gates investigates Dracula, Cold War psychic spying, and Spartacus.
S4E7Truth Vs. Tabloids
May 13, 2026Josh investigates Jim Morrison's death, a "mermaid" in a Japanese temple and an alien abduction claim.
S4E8Who Done It?
May 20, 202642mJosh Gates investigates three of history's most baffling mysteries, uncovering the truth behind the death of explorer Meriwether Lewis, a possible plot around Dag Hammarskjöld's 1961 plane crash, and the vanishing of Judge Joseph Crater.
S4E9Larger Than Life
May 27, 202642mExpedition Files reveals shocking new secrets hidden in our world's most captivating mysteries. With three stories sharing one theme per episode, Josh Gates uncovers stunning revelations, recreating pivotal historical moments in his virtual time machine.
S4E10You Don't Know Me
Jun 3, 202642mJosh 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.
S4E11The Supernatural
Jun 10, 202642mJosh Gates explores the supernatural, from Nikola Tesla's mysterious "Death Ray", to a message from a Sicilian nun believed to be of demonic origin. Plus, scientists uncover the explanation behind the Oracle of Delphi's prophetic visions.
S4E12Smoke and Mirrors
Jun 17, 202642mJosh Gates explores new evidence reshaping 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. Crippen's wife.