( Warren Brown ): Luther's loyal partner who must decide whether to testify against him.
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. Luther 3x2
( Idris Elba ): The brilliant but embattled detective. ( Warren Brown ): Luther's loyal partner who
Luther investigates the deaths of Dani Lane and her husband. He realizes the killer is mimicking the 30-year-old "Shoreditch Creeper" murders. " Paul Ellis