| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | The Telephone Only Rings Twice |
January 14, 1990
ITV1
|
25 | |
| S04E02 | Strictly Business |
January 21, 1990
ITV1
|
25 | |
| S04E03 | The Treasure |
January 28, 1990
ITV1
|
25 | |
| S04E04 | No Deposit - No Return |
February 4, 1990
ITV1
|
25 | |
| S04E05 | At Last |
February 11, 1990
ITV1
|
25 | |
| S04E06 | Fine Adjustments |
February 18, 1990
ITV1
|
25 | |
| S04E07 | Old Scores |
February 25, 1990
ITV1
|
25 | |
| S04E08 | Dangers in the Night |
March 4, 1990
ITV1
|
25 | |
| S04E09 | The Quest |
March 11, 1990
ITV1
|
25 | |
| S04E10 |
Best Laid Schemes
series finale
|
March 18, 1990
ITV1
|
25 |
No artwork of this type.
No artwork of this type.
No artwork of this type.