I LOVE crime dramas and law dramas. Unfortunately, this one failed at both. Do Kyungsoo does a wonderful job portraying prosecutor Jin Jung, who is more than willing to bend the rules in order to punish people for their crimes. As a new prosecutor, he tends to get easy cases that don't involve too much digging - but when a seemingly clear-cut murder case comes across his desk, the more he reads into it, the more complicated it gets. However, it seems there are a lot of people that don't want this case investigated.

In the classic "prosecutor takes on the Ultimate Bad Guy" fashion, Bad Prosecutor is set up to be a very enjoyable show where the villain and protagonist go back and forth on who has the upper hand in their series-long battle. However, there a few things that this series got wrong that just made it significantly less fun to watch than most other crime/law dramas I've seen:

1) Predictability. There were very few times in this series that I was actually surprised by a twist (and liked the twist). Most of the time, the ending of the episode could be predictable by halfway through the episode, and that made what should have been cliffhangers underwhelming.
2) Protagonist. While Do Kyungsoo did an excellent job portraying Jin Jung, I still didn't love the character. I was hoping for a morally gray prosecutor who didn't care whether he was breaking the law to get what he thought justice was. Instead, we got a prosecutor willing to go around the law, but still abide by it when push comes to shove. In his eyes, "Justice = Laws", which I feel could have been played around with more, especially with the horrible things the villain in this series had done.
3) Law. Considering the title, I assumed there would be a lot more courtroom scenes in this show. While I still enjoyed watching them chase after the villain, I think my expectations were a bit different considering Jin Jung is a prosecutor, not a cop.
4) Outcomes. There were many times where they could have had bigger and better (or sometimes, worse) outcomes for a character's actions, but they seemed to downplay any repercussions that should have occurred to both the protagonist and antagonist. I was waiting for the ending battle to really kick in and it never really did. It was much more anticlimactic in that sense than I expected.

If you enjoy crime/law dramas, you'll probably still enjoy this! Just beware its more of a cop show than a courtroom show, and you might be able to sense exactly where it's going (and be right 95% of the time) pretty easily.