Single-Handed: Series 3 (2009)

Sergeant Driscoll receives a late-night phone call informing him that a young man is drowning. Jack finds this is connected with an undercover anti-drug operation against a wealthy businessman with connections to the IRA, a mole and Sergeant Driscoll's encounter with his former lover, Maura Dooley (played by Marcella Plunkett). Pádraic Delaney features in the role of Detective Garda Sergeant Michael Casey, an undercover agent.