As expected from the writer of "Stranger"! The story was a little slow for my taste but did not bore me, and the suspense was just right. It was quite disturbing. The story was slightly different from what I had in my head as I began watching but it definitely not a waste of time. It's not one of those dramas I would like to rewatch though. The plot was nicely packed into a 2-hour-long movie. The music helped bring a certain mood to the scene and made it even more suspenseful, but the music itself was nothing memorable. Also, Jo Jin Woong never fails to impress me with his acting! If it had not been because of him, I do not think I would have enjoyed it as much as I did.