Everything is wonderful whodunit drama. There's great character development, the plot is Engaging. It's true korean style corrupt police prosecution story, quite similar in tone to Forest of Secrets.
But the female lead just blows apart any logical human affection and rationale.
How can she have split mind 99% of times as a reporter. You need to watch it to see how her character goes down to depths of complete humiliation of human behavior. Having emotions for killers is something unexplicable. Especially cold blooded murder and an innocent being executed
If her character was kept more believable, I would have given it a 9.
There's tonnes of comedy.
But for me the female lead wrecks it apart by her completely unbelievable affection for the revealed killer