One of Britain’s greatest detectives is back for one final three hour special this December as Idris Elba is back for the finale of Luther. Luther has been off in the coutryside and away from the violent crimes that are his specialty but a brutal cannibalistic killer starts striking in London and the police need Luther and his insights back to find them. There’s no sign of Ruth Wilson’s Alice Morgan but we do have Game of Thrones’ Rose Leslie as a new detective helping out Luther. All three hours of the special will air on December 17th on BBC America and you can check out the trailer below.