This drama was a bit of a disappointment with, at first, the promising story and then it turning into a big letdown. Crime and thriller dramas are not my cup of tea, but I chose to continue watching this because of the first couple of episodes. The cruel but cute love story of the main characters reminded me of a drama that I adore. Mainly, this series focuses on a serial killer and his psychopathic ways, the people who were disturbed and touched by his violent crimes. I do think that this drama would've been more amazing if there was more brutality (after all, it's a major killer we're talking about) and more romantic scenes incorporated. However, as a fan of romance shows, I did focus on the love story most of the time. It seemed to draggy for me: their reunion after 12 years, their "weird" relationship, the first kiss and so on. Nevertheless, it is a crime drama so I can't complain too much, it's my fault for hoping to see more cutesy scenes. On a more positive note, I really adored the side characters, both good and the evil, their development. It just goes to show how one cruel person and his deeds could influence this vast majority of people around him. So if you're looking for something dark and intriguing to watch, this might be it.