(Sienna Guillory): A potential love interest for Luther.
In a pivotal moment, Luther listens to Ripley’s recorded statement and realizes his partner defended him despite the pressure from IA.
(David O'Hara): The IA officer determined to dismantle Luther’s career. Guide to Key Scenes
Luther enters Stark’s lair, swipes his own file, and warns Stark that he will "take him down harder and faster" if Stark persists.
( Warren Brown ): Luther's loyal partner who must decide whether to testify against him.
In the second episode of Luther Season 3, DCI John Luther investigates a series of "copycat" murders while dealing with an internal affairs investigation designed to bring him down.
Luther corners Paul Ellis, who ultimately flings himself through a window rather than being captured. "Luther" Episode #3.2 (TV Episode 2013) - IMDb