Season three of "Luther," the British crime drama starring Idris Elba in his best post-Stringer Bell role as the brilliant, obsessive Detective Chief Inspector John Luther, won't air in the U.S. until September 3 on BBC America. The U.K. will see the four new episodes sooner -- the BBC will be premiering them in July, and has just released a trailer showcasing Elba back in his Golden Globe-winning role, as well as Sienna Guillory as a new love interest and Ruth Wilson returning as Luther's sociopathic pal Alice. Check it out below.