| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | Episode 1 |
January 4, 2016
BBC One
|
45 | |
| S04E02 | Episode 2 |
January 5, 2016
BBC One
|
45 | |
| S04E03 | Episode 3 |
January 6, 2016
BBC One
|
45 | |
| S04E04 | Episode 4 |
January 7, 2016
BBC One
|
45 | |
| S04E05 | Episode 5 |
January 8, 2016
BBC One
|
45 | |
| S04E06 | Episode 6 |
January 11, 2016
BBC One
|
45 | |
| S04E07 | Episode 7 |
January 12, 2016
BBC One
|
45 | |
| S04E08 | Episode 8 |
January 13, 2016
BBC One
|
45 | |
| S04E09 | Episode 9 |
January 14, 2016
BBC One
|
45 | |
| S04E10 |
Episode 10
season finale
|
January 15, 2016
BBC One
|
45 |
No artwork of this type.
No artwork of this type.
No artwork of this type.