When graffiti appears around London by an unknown person claiming to have murdered a celebrated street artist, the team reopens the four-year-old case. Originally part of a gang, the victim went solo when he received support from a wealthy art patron, leaving the detectives suspicious of his resentful former crew members. Meanwhile, Brian signs up to Twitter to chart the gritty life of a lawman, much to his colleagues' displeasure.
| Creator | Nigel McCrery |
|---|---|
| Actor | Dennis Waterman, Tamzin Outhwaite, Denis Lawson |
| Country | United Kingdom |
| Production | Wall to Wall |