It only has 5 episodes but "Ishi No Mayu" (which literally means "Stone's cocoon") is probably the best action/thriller japanese drama of the year. The story is simple: a creepy killer, Toremi, mocks the police and kills people in a creepy way (with mortar). Detective Toko Kisaragi, a young and shy girl, becomes Toremi's negotiator but why? What does her deceased father, once a detective too, have in common with this case and Toremi? The actors do a great job with all the characters and the OST is awesome too!