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| Aflevering | Eerste uitzending |
|---|---|
| S04E01 - The World's Strangest Ghost Town | 27/06/2019 |
| S04E02 - Palace of Death | 04/07/2019 |
| S04E03 - Guernsey Nazi Towers | 11/07/2019 |
| S04E04 - Bodie USA | 18/07/2019 |
| S04E05 - Tunnel To The Underworld | 25/07/2019 |
| S04E06 - Escobar's Ruin | 01/08/2019 |
| S04E07 - Villa De Vecchi Rhodes | 08/08/2019 |
| S04E08 - Pyramiden Norway | 31/10/2019 |
| S04E09 - Behind The Berlin Wall | 07/11/2019 |
| S04E10 - Bannack USA | 14/11/2019 |
| S04E11 - Buckner Building Alaska | 21/11/2019 |
| S04E12 - 1936 Olympic Village Berlin | 28/11/2019 |