I not at all into the police/detective genre that much. It's too episodic for my taste, still though I've watched a few of these and they've been alright. I love mystery/suspense stuff though, like Liar Games and Quiz Show etc. Actually currently watching Keizoku 2: SPEC and it's the best detective/police drama I've yet to see. Much thanks to Erika Todas amazing performance and the wonderful humor of the show. Which the latter might be a case of aquired taste.
i prefer this thread specific to jdramas too. i've seen quite a few of these too and there are still so many too watch. guilty has to be one of the best crime-suspense dramas out there. i loved boss season 1 so i should probably watch season 2.
edited! I add some more in the list ^^