The first season of this Korean drama opens with Prosecutor Hwang Shi Mok discovering the body of a murdered man. The case will see him working with policewoman Lieutenant Han Yeo Jin. They are very different characters; thanks to an operation when he was a teenager Shi Mok has reduced emotions. There is an early suspect but questions are soon raised about his guilt as evidence emerges suggesting the victim had been involved in corruption. The case draws attention to tensions between the police and the prosecution service.
The second season opens with two students drowning at a beach where the closure notices had been taken down. Those who took the notices down are quickly apprehended but they have contacts in high places and are soon released; Shi Mok is on the case. Once again he finds himself working with Han Yeo Jin as both are seconded to a group examining the relative powers of the police and prosecution service. Both sides are keen to show the other in a poor light so look into wrong doing in the other service. Tensions further mount when a prosecutor disappears; evidence suggests kidnapping or worse.
I really enjoyed this series. It doesn't waste time with needless exposition concerning the rivalry between police and prosecution; it treats the viewers as intelligent enough to pick it up as the story progresses. The cases in both seasons are interesting and the main characters are fun to watch. Cho Seung-woo does an outstanding job as Hwang Shi Mok but Bae Doona steals just about every scene she appears in, as she manages to produce laughs with the subtlest of gestures, without every becoming a comedy character. The rest of the cast are impressive too. Overall I'd certainly recommend this.
These comments are based on watching the series in Korean with English subtitles.