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| Aflevering | Eerste uitzending |
|---|---|
| S04E01 - Adapt or Die | 18/06/2015 |
| S04E02 - Dark Crossing | 25/06/2015 |
| S04E03 - Welcome to the Tundra | 02/07/2015 |
| S04E04 - Best Laid Plans | 09/07/2015 |
| S04E05 - Deadly Ascent | 16/07/2015 |
| S04E06 - Snowblind | 23/07/2015 |
| S04E07 - The Fallen | 30/07/2015 |
| S04E08 - Lifeblood | 06/08/2015 |
| S04E09 - So Close, Yet So Far Away | 13/08/2015 |
| S04E10 - Hard Target | 20/08/2015 |
| S04E11 - Touchdown | 27/08/2015 |
| S04E12 - Miles to Go | 03/09/2015 |
| S04E13 - In the Blood | 10/09/2015 |
| S04E14 - Winter's Gamble | 17/09/2015 |
| S04E15 - Awakening | 24/09/2015 |
| S04E16 - Hard Fought and Fairly Won | 01/10/2015 |