| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | Episode 1 |
January 25, 1968
BBC
|
30 | |
| S04E02 | Episode 2 |
March 3, 1968
BBC
|
30 | |
| S04E03 | Episode 3 |
March 10, 1968
BBC
|
30 | |
| S04E04 | Episode 4 |
March 17, 1968
BBC
|
30 | |
| S04E05 | Episode 5 |
March 24, 1968
BBC
|
30 | |
| S04E06 | Episode 6 |
March 31, 1968
BBC
|
30 | |
| S04E07 | Episode 7 |
April 7, 1968
BBC
|
30 | |
| S04E08 | Episode 8 |
April 14, 1968
BBC
|
30 | |
| S04E09 | Episode 9 |
April 21, 1968
BBC
|
30 | |
| S04E10 | Episode 10 |
April 28, 1968
BBC
|
30 | |
| S04E11 | Episode 11 |
May 5, 2022
BBC
|
30 | |
| S04E12 | Episode 12 |
May 12, 1968
BBC
|
30 | |
| S04E13 | Episode 13 |
May 19, 1968
BBC
|
30 | |
| S04E14 | Episode 14 |
April 26, 1968
BBC
|
30 | |
| S04E15 | Episode 15 |
June 2, 1968
BBC
|
30 | |
| S04E16 |
Episode 16
series finale
|
June 9, 1968
BBC
|
30 |
No artwork of this type.
No artwork of this type.
No artwork of this type.