| Episodes | Name | Date | Rating |
|---|---|---|---|
| S1 EP1 | The Long Bright Dark | 2014-01-12 | 8.3 |
| S1 EP2 | Seeing Things | 2014-01-19 | 8.3 |
| S1 EP3 | The Locked Room | 2014-01-26 | 8.6 |
| S1 EP4 | Who Goes There | 2014-02-09 | 8.9 |
| S1 EP5 | The Secret Fate of All Life | 2014-02-16 | 9 |
| S1 EP6 | Haunted Houses | 2014-02-23 | 8.3 |
| S1 EP7 | After You've Gone | 2014-03-02 | 8.3 |
| S1 EP8 | Form and Void | 2014-03-09 | 8.5 |
| S2 EP1 | The Western Book of the Dead | 2015-06-21 | 7 |
| S2 EP2 | Night Finds You | 2015-06-28 | 7.3 |
| S2 EP3 | Maybe Tomorrow | 2015-07-05 | 6.8 |
| S2 EP4 | Down Will Come | 2015-07-12 | 7.3 |
| S2 EP5 | Other Lives | 2015-07-19 | 7.2 |
| S2 EP6 | Church in Ruins | 2015-07-26 | 7.3 |
| S2 EP7 | Black Maps and Motel Rooms | 2015-08-02 | 7.7 |
| S2 EP8 | Omega Station | 2015-08-09 | 7.2 |
| S3 EP1 | The Great War and Modern Memory | 2019-01-13 | 7.6 |
| S3 EP2 | Kiss Tomorrow Goodbye | 2019-01-13 | 7.3 |
| S3 EP3 | The Big Never | 2019-01-20 | 7.2 |
| S3 EP4 | The Hour and the Day | 2019-01-27 | 7.1 |
| S3 EP5 | If You Have Ghosts | 2019-02-03 | 7.3 |
| S3 EP6 | Hunters in the Dark | 2019-02-10 | 7.4 |
| S3 EP7 | The Final Country | 2019-02-17 | 7.5 |
| S3 EP8 | Now Am Found | 2019-02-24 | 7.2 |
| S4 EP1 | Night Country: Part 1 | 2024-01-14 | 7 |
| S4 EP2 | Night Country: Part 2 | 2024-01-21 | 7.2 |
| S4 EP3 | Night Country: Part 3 | 2024-01-28 | 7.3 |
| S4 EP4 | Night Country: Part 4 | 2024-02-04 | 7.1 |
| S4 EP5 | Night Country: Part 5 | 2024-02-11 | 7.3 |
| S4 EP6 | Night Country: Part 6 | 2024-02-18 | 7.4 |