Very nice law drama overall, I enjoyed it a lot. I like that the plot was well written and stayed tight, and coherent throughout the entire series with no dumbassery, fillers, or circus in the court room. The killer's identity reveal also comes naturally, without contrived attempts to prolong it being kept hidden (like in headache inducing Blind, for example). If you watched a certain Hollywood movie with a similar plot, or simply figured it out early from a rather limited range of presented characters then good for you, take a cookie.

The highlight of the drama is not "whodunit" mystery in itself, but the story behind it and FL's character development, which progresses considerably after she starts to get involved with ML and seemingly unrelated cases he one way or the other drops on her. I thoroughly enjoyed their characters interactions, they had great chemistry.

I'd say my only complaint would be that the initially calm and intelligent main villain made a big mistake down the line by trying to cover up another character's crimes (which would have been revealed anyway). And while trying to consequently cover up that mistake he started to get increasingly paranoid and made even more mistakes, which in the end led him to a rather dumb cliche end. It was totally avoidable, with minimal damage to himself, if only he stayed put and didn't do anything unnecessary. But other than that it was quite an enjoyable watch.