| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | Episode 1 |
April 4, 1979
BBC
|
30 | |
| S04E02 | Episode 2 |
April 11, 1979
BBC
|
30 | |
| S04E03 | Episode 3 |
April 18, 1979
BBC
|
30 | |
| S04E04 | Episode 4 |
April 25, 1979
BBC
|
30 | |
| S04E05 | Episode 5 |
May 2, 1979
BBC
|
30 | |
| S04E06 |
Episode 6
season finale
|
May 9, 1979
BBC
|
30 |
No artwork of this type.
No artwork of this type.
No artwork of this type.