This is the best horror and psychological Korean drama I have ever seen, and I've seen quite a few.

The acting in this drama is absolutely astonishing. Every actors including the side actors need an award. Especially the chemistry between two specific main actors (no romance).

The music throughout the 16 episodes are beautiful, especially the ending songs. Before something dark is about to happen there is always eerie music which makes the scare even more better.

The story itself impressed me a lot. I've never seen a Kdrama doing this kind of plot before which makes it even better. A lot of Kdrama are a bit cliché especially when it comes to the horror dramas, but this always keeps you on your toes and makes you second guess everything.

Overall, this is on my re-watch list and I'm pretty sure I am going to keep watching it due to the main actors and the plot itself.

Give this a go, you won't be disappointed!