I quite liked this for about first 6-8 episodes, but then it started going downhill. At beginning, I enjoyed the cases and, although characters could be frustrating, I liked them well enough. But as things progressed, the plot got more and more ridiculous and needlessly convoluted. I mean how many serial killers do you expect me to believe are in this one city?! Furthermore, I hate when police are shown be absolutely incapable and is the worst case of that in any drama I've seen. I might have been able to forgive that, but the characters mostly became awful after that as well. Several innocent people die directly as a consequence of our main character's actions - he doesn't seem to care and is never held accountable. Not only were they unlikable, but also super inconsistent. I don't mind gray characters, but at least let their actions make sense!
Acting was pretty good and the music was fine. But all in all, I definitely do not recommend this drama. Don't waste your time, there are much better crime dramas out there.