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| Aflevering | Eerste uitzending |
|---|---|
| S04E01 - Vikings in the Desert | 28/05/2019 |
| S04E02 - Alien Artifacts | 04/06/2019 |
| S04E03 - Cave of Secrets | 11/06/2019 |
| S04E04 - The Ripper Unmasked | 18/06/2019 |
| S04E05 - Phoenicians in America | 25/06/2019 |
| S04E06 - The Spy Who Saved America | 02/07/2019 |
| S04E07 - Bigfoot of the Bayou | 09/07/2019 |
| S04E08 - Drake's Lost Treasure | 16/07/2019 |
| S04E09 - Chicago's Mystery Bomber | 23/07/2019 |
| S04E10 - Exodus of the Templars | 30/07/2019 |