| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | Episode 01 |
August 26, 1971
ITV1
|
30 | |
| S04E02 | Episode 02 |
September 2, 1971
ITV1
|
30 | |
| S04E03 | Episode 03 |
September 9, 1971
ITV1
|
30 | |
| S04E04 | Episode 04 |
September 16, 1971
ITV1
|
30 | |
| S04E05 | Episode 05 |
September 23, 1971
ITV1
|
30 | |
| S04E06 | Episode 06 |
September 30, 1971
ITV1
|
30 | |
| S04E07 |
Christmas Special
series finale
|
December 27, 1971
ITV1
|
30 |
No artwork of this type.
No artwork of this type.
No artwork of this type.