Diplomat Kuroda Kosaku - 2011 - 7/10
AKA - Gaikôkan Kuroda Kôsaku // 外交官・黒田康作

Well done spy thriller / sequel to Amalfi: Rewards of the Goddess.
Ten episode J-dorama follows diplomat (ha!) as he attempts to solve a series of increasingly high profile murders.
The police are involved, as is the Foreign Department, finally whatever they call National Security.
He enlists an unappreciated police detective, and also a few unlikely allies (including a couple of cameos from Byung-hun Lee).
Kuroda is mostly a one man show, however.
Cooperation and sharing details are not strong points, viewers have to work out mysteries on their own.
That will be fine for some, too difficult for others.
Closing credits of chess play symbolize the moves, counter-moves and calculated alliances.
The final two episodes forget the basic film rule of “Show, don’t tell” and are extremely talky and explanatory.
Excellent adult drama, nevertheless.