4. Sezon
Görseller
| # | Görsel | Başlık | Yayınlandı |
|---|---|---|---|
| 1 |  | Viking Secrets | 27 Ara 2017 |
| 2 |  | Vikings In America | 3 Oca 2018 |
| 3 |  | Origins of Stonehenge | 10 Oca 2018 |
| 4 |  | The Secret | 17 Oca 2018 |
| 5 |  | Butch Cassidy's Lost Loot | 24 Oca 2018 |
| 6 |  | Hunt For The Metal Library | 31 Oca 2018 |
| 7 |  | Great Women of Ancient Egypt | 7 Şub 2018 |
| 8 |  | Egypt's Lost Queens | 14 Şub 2018 |
| 9 |  | Secrets of Brother XII | 28 Şub 2018 |