| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | Double Exposure |
February 14, 1974
ITV1
|
60 | |
| S04E02 | Catherine the Great |
February 21, 1974
ITV1
|
60 | |
| S04E03 | Jailbait |
February 28, 1974
ITV1
|
60 | |
| S04E04 | Stand and Deliver |
March 7, 1974
ITV1
|
60 | |
| S04E05 | Something about a Soldier |
March 14, 1974
ITV1
|
60 | |
| S04E06 | Rendezvous |
March 21, 1974
ITV1
|
60 | |
| S04E07 | Sounds Sinister |
March 28, 1974
ITV1
|
60 | |
| S04E08 | Entente Cordiale |
April 4, 1974
ITV1
|
60 | |
| S04E09 | Date of Birth |
April 11, 1974
ITV1
|
60 | |
| S04E10 | Intercept |
April 18, 1974
ITV1
|
60 | |
| S04E11 | Alien |
April 25, 1974
ITV1
|
60 | |
| S04E12 | Diversion |
May 2, 1974
ITV1
|
60 | |
| S04E13 |
Downwind of Angels
series finale
|
May 9, 1974
ITV1
|
60 |
No artwork of this type.
No artwork of this type.