This is by far one of the best non BL shows I've seen from GMMTV, its definitely in my top 5 from them. My only complaint is that it HAS to be a crime that this show is only 4 episodes. I loved everything about it from the characters to the storyline. The horror isn't too much just enough, although it can get a little bloody for anyone sensitive to blood.
How dare they make the first season only 4 episodes?! And I say first season with confidence because they better have a season 2 with the way things were left off or else you'll find me rioting in the streets of Thailand in front of GMM headquarters!