| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | Episode 1 |
August 24, 1974
BBC One
|
||
| S04E02 | Episode 2 |
August 31, 1974
BBC One
|
||
| S04E03 | Episode 3 |
September 7, 1974
BBC One
|
||
| S04E04 | Episode 4 |
September 14, 1974
BBC One
|
||
| S04E05 | Episode 5 |
September 21, 1974
BBC One
|
||
| S04E06 |
Episode 6
series finale
|
September 28, 1974
BBC One
|
No artwork of this type.
No artwork of this type.
No artwork of this type.