I really enjoyed this drama. I was not really expecting from this drama since it was not so hype on social media but it was a good watch. Seeing Lee Young Ae again as the female lead, she did not disappoint. The whole process of finding what is happening around her is so good. The pacing and thrill, cinematography was well done. I was waiting every week for the release of this drama and stop at episode 10 because I was not yet ready to finish this as it is only 12 episodes. I like the progress of the storyline, it's really great. I would recommend this drama to those who like thriller dramas.