Luther 3x2 -

(Sienna Guillory): A potential love interest for Luther.

Luther enters Stark’s lair, swipes his own file, and warns Stark that he will "take him down harder and faster" if Stark persists.

( Kevin Fuller ): The mute, depraved killer acting as Carney's disciple. Luther 3x2

( Idris Elba ): The brilliant but embattled detective.

Luther’s budding romance with Mary Day is repeatedly interrupted by the demands of the investigation. Key Characters & Cast (Sienna Guillory): A potential love interest for Luther

Luther corners Paul Ellis, who ultimately flings himself through a window rather than being captured. "Luther" Episode #3.2 (TV Episode 2013) - IMDb

The investigation leads to William Carney, an aging serial killer in a care home. Luther discovers Carney has been mentored by a "pilgrim," Paul Ellis, who is carrying out the new murders. ( Idris Elba ): The brilliant but embattled detective

In a pivotal moment, Luther listens to Ripley’s recorded statement and realizes his partner defended him despite the pressure from IA.