I like how Dong Shik think that he's a psychopath even though he know that his personality opposite to psychopath, i shocked when Dong Shik suddenly turn into a psychopath, he doesn't really show that he's a psychopath but when he shows it, it will make a lot feel shocked with how Dong Shik character suddenly change.

Dong Shik and Bo Kyung has a chemistry and fit in so well, they don't even awkward with acting together, this drama already interesting from episode 1, such a worth watching kdrama, it's also teach us to not believe in someone even they're close to us