Tense drama series about the different challenges faced by the British Security Service as they work against the clock to safeguard the nation. The title is a popular colloquialism for spies, and the series follows the work of a group of MI5 officers based at the service's Thames House headquarters, in a highly secure suite of offices known as The Grid.
| Title | Time | |
|---|---|---|
| 1 | Thou Shalt Not Kill | 2002-05-13 |
| 2 | Looking After Our Own | 2002-05-20 |
| 3 | One Last Dance | 2002-05-27 |
| 4 | Traitor's Gate | 2002-06-04 |
| 5 | The Rose Bed Memoirs | 2002-06-10 |
| 6 | The Lesser of Two Evils | 2002-06-17 |
