About 2 minutes of it is scenes you have already watched, in case you have the memory of a goldfish. Nen and Peijing out-think each other so hard you can almost hear the brain cells filing for overtime. Keep an ear out for "And someone's trying to hide it."; it hits harder than it has any right to. Peijing arrives, and the room gets noticeably more complicated. Good television, quietly doing its job.