(Luther/2010) Idris Elba plays Detective Chief Inspector John Luther: obsessive, possessed, and consumed by the darkness of the crimes he has to solve. Devastated by the brutal murder of his wife, John Luther returns to policing in a different world. His old unit has gone and he’s working in the newly created Serious and Serial unit. Headed by former police complaints officer Martin Schenk, it is Luther’s chance for a fresh start. But is it one he really wants?.