| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | Episode 1 |
January 1, 1978
BBC One
|
35 | |
| S04E02 | Episode 2 |
January 14, 1978
BBC One
|
35 | |
| S04E03 | Episode 3 |
January 21, 1978
BBC One
|
35 | |
| S04E04 | Episode 4 |
January 28, 1978
BBC One
|
35 | |
| S04E05 | Episode 5 |
February 4, 1978
BBC One
|
35 | |
| S04E06 | Episode 6 |
February 11, 1978
BBC One
|
35 | |
| S04E07 | Episode 7 |
February 18, 1978
BBC One
|
35 | |
| S04E08 | Episode 8 |
February 25, 1978
BBC One
|
35 | |
| S04E09 | Episode 9 |
March 4, 1978
BBC One
|
35 | |
| S04E10 | Episode 10 |
March 11, 1978
BBC One
|
35 | |
| S04E11 | Episode 11 |
March 18, 1978
BBC One
|
35 | |
| S04E12 | Episode 12 |
March 25, 1978
BBC One
|
35 | |
| S04E13 | Episode 13 |
May 27, 1978
BBC One
|
35 | |
| S04E14 | Episode 14 |
August 28, 1978
BBC One
|
35 | |
| S04E15 | A Christmas Special |
December 26, 1978
BBC One
|
45 | |
| S04E16 |
Episode 16
season finale
|
December 30, 1978
BBC One
|
45 |
No artwork of this type.
No artwork of this type.
No artwork of this type.