Question: Who did John Heffernan portray in the British crime drama programme starring Idris Elba?
Sentence (from "John Heffernan (actor)"): He has appeared on screen in a number of roles, including Henry Lascelles in the BBC adaptation of Susanna Clarke's novel, "Jonathan Strange & Mr Norrell", Jaggers in "Dickensian" and Steven Rose in the fourth series of "Luther".
Relevant evidence: Yes