5 episodes
| Episode | Title | Repeated | Description |
|---|---|---|---|
| 01 | 'r' | * 20071210, * 20071211, * 20080804, * 20080805 | Ashenden is recruited into the Secret Service by 'R', on an entirely 'non-attributable' basis. |
| 02 | Miss King | * 20071211, * 20071212, * 20080805, * 20080806 | Ashenden, evading the Swiss police, is called to the deathbed of Miss King, who has information she is desperate to impart. |
| 03 | Giulia Lazzari | * 20071212, * 20071213, * 20080806, * 20080807 | Determined to entrap a renowned traitor, Ashenden co-opts a dancer. |
| 04 | The Traitor | * 20071213, * 20071214, * 20080807, * 20080808 | Ashenden unearths a plot by the Germans to infiltrate an Englishman, Caypor, into England as a spy. |
| 05 LAST | Mr Harrington's Washing | * 20071214, * 20071215, * 20080808, * 20080809 | Ashenden encounters an American who refuses to defer to the Bolsheviks, with ugly consequences. |