Luther, from the BBC. It's got Idris Elba in it. I didn't really know him before I saw Luther, but now when I see that he's in something, I'm like "Fuck yeah, Idris Elba!" (fingers crossed he gets Bond, but I doubt it'll happen). Anyways, you've heard the premise a million times. A cop who's better at his job than everyone else investigates serial murders. Same old story. Luther doesn't really do something new, it just does the old stuff really, really well. He's a better cop than everyone else, but he's not unbelievably better. He screws up. He thinks of things other people don't... but it's too late. People get hurt because he makes the wrong call. It's an incredibly intense show with some rock-solid acting from the entire cast. It's short, too. Only 14 episodes across 3 seasons. Make sure you have time to watch episodes 5 and 6 together, because you won't want to stop when you get there. Also, the cinematography is fantastic. The whole thing is beautifully shot.