| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | Episode 1 |
March 25, 2009
BBC Two
|
30 | |
| S04E02 | Episode 2 |
April 1, 2009
BBC Two
|
30 | |
| S04E03 | Episode 3 |
April 8, 2009
BBC Two
|
30 | |
| S04E04 | Episode 4 |
April 15, 2009
BBC Two
|
30 | |
| S04E05 | Episode 5 |
April 22, 2009
BBC Two
|
30 | |
| S04E06 | Episode 6 |
April 29, 2009
BBC Two
|
30 | |
| S04E07 | Episode 7 |
May 6, 2009
BBC Two
|
30 | |
| S04E08 | Episode 8 |
May 13, 2009
BBC Two
|
30 | |
| S04E09 | Episode 9 |
May 20, 2009
BBC Two
|
30 | |
| S04E10 | Episode 10 |
May 27, 2009
BBC Two
|
30 | |
| S04E11 |
Episode 11
season finale
|
June 3, 2009
BBC Two
|
30 |
No artwork of this type.
No artwork of this type.
No artwork of this type.