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| Aflevering | Eerste uitzending |
|---|---|
| S04E01 - TBA | 15/11/2016 |
| S04E02 - Always Forward | 22/11/2016 |
| S04E03 - Swamp Things | 29/11/2016 |
| S04E04 - No Stone Unturned | 06/12/2016 |
| S04E05 - Bullseye | 13/12/2016 |
| S04E06 - Circle in the Wood | 20/12/2016 |
| S04E07 - All That Glitters | 27/12/2016 |
| S04E08 - The Mystery of Samuel Ball | 03/01/2017 |
| S04E09 - Echoes from the Deep | 10/01/2017 |
| S04E10 - About Face | 17/01/2017 |
| S04E11 - Presidential Secrets | 24/01/2017 |
| S04E12 - Hyde Park and Go Seek | 31/01/2017 |
| S04E13 - One of Seven | 07/02/2017 |
| S04E14 - Of Sticks and Stones | 14/02/2017 |
| S04E15 - Blood Is Thicker | 21/02/2017 |
| S04E16 - A Look Ahead | 28/02/2017 |