I accidently read a very enthusiastic good review about this movie at facebook. Which truly make me curious then, set on " i need to watch this movie" and yes i watched it!!!!!!!! Im really satisfied 100%. I've rewatched almost 5 times. So amazing the acting,and storyline. im finally a fan of kang haneul after watch this movie bcs his versatile acting blowing up here as main lead! Fun fact,when i start watching this , suddenly i feel hesitated because im scared after watching first scene of this movie . It was midnight when i watch this with my sister. This movie make me realize i love suspense and thriller genre. I enjoy romance too, but suspense and thriller is much more better. I've never watch such a good thriller movie like this before.