That for sure goes to my top 10.  I can't complain about anything in this drama. The plot is smart, surprising. The cast  was really nice. Lee Jeon Suk showing his awesomeness as always. How not to fangirl him. Anytime I watch him I fangirl him hahaha.
Well This is not only one history throughout the hole series, but a couple of mini histories inside a major one, and each case prossecutor Jeon worked was a surprise. I usually think when I cant predict what's gonna happen next, and when it happens I get surprised and satisfied a sign that the history is good.
Yes, this was a very good history, a very good drama. The main female lead, something  always complain in dramas, was a really good character. Not the same crying good-for-nothing-beside-being-saved most female lead in dramas. I really like dramas that goes beyond cliches, and this was one of those.
I recommend watching it, and re watching it.