Josh travels across the United States to find the treasures featured in the cryptic 1982 book "The Secret"; Josh meets with members of the book's cult following, who each think they are on the verge of locating one of the 10 remaining treasures.
| Title | Expedition Unknown - Season 4 Episode 4 : The Secret |
|---|---|
| Alternative Titles | Výprava do neznáma, Expedice do neznáma |
| First Air Date | 2015-01-08 |
| Last Air Date | 2025-06-25 |
| Number of Episodes | 151 |
| Number of Seasons | 16 |
| Genres | Documentary, Reality, |
| Networks | Travel Channel, DMAX, |
| Casts | Josh Gates |
| Plot Keywords | , |
Episodes List
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Expedition Unknown Season 4 :Episode 1 Viking Secrets Viking Secrets
2017-12-27The adventures of Josh Gates as he investigates unsolved iconic stories across the globe.
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Expedition Unknown Season 4 :Episode 2 Vikings in America Vikings in America
2018-01-03The adventures of Josh Gates as he investigates unsolved iconic stories across the globe.
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Expedition Unknown Season 4 :Episode 3 Origins of Stonehenge Origins of Stonehenge
2018-01-10The adventures of Josh Gates as he investigates unsolved iconic stories across the globe.
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Expedition Unknown Season 4 :Episode 4 The Secret The Secret
2018-01-17The adventures of Josh Gates as he investigates unsolved iconic stories across the globe.
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Expedition Unknown Season 4 :Episode 5 Butch Cassidy's Lost Loot Butch Cassidy's Lost Loot
2018-01-24The adventures of Josh Gates as he investigates unsolved iconic stories across the globe.
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Expedition Unknown Season 4 :Episode 6 Hunt for the Metal Library Hunt for the Metal Library
2018-01-31The adventures of Josh Gates as he investigates unsolved iconic stories across the globe.
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Expedition Unknown Season 4 :Episode 7 Great Women of Ancient Egypt Great Women of Ancient Egypt
2018-02-07The adventures of Josh Gates as he investigates unsolved iconic stories across the globe.
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Expedition Unknown Season 4 :Episode 8 Egypt's Lost Queens Egypt's Lost Queens
2018-02-14The adventures of Josh Gates as he investigates unsolved iconic stories across the globe.
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Expedition Unknown Season 4 :Episode 9 Global Game Show: Out of This World Global Game Show: Out of This World
2018-02-21The adventures of Josh Gates as he investigates unsolved iconic stories across the globe.
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Expedition Unknown Season 4 :Episode 10 Secrets of Brother XII Secrets of Brother XII
2018-02-28The adventures of Josh Gates as he investigates unsolved iconic stories across the globe.
