I always avoid Horror, Drama because it's too long to watch till the end, I'm a scaredy-cat but the plot is very interesting and I don't have anything to watch so end up watch it. Just 1 ep. I hooked and even I scared, but I cannot stop to continue play the next episode. Now I will write down to my record that this is the best frightening horror drama I've ever finished. Moreover, very best pilot twist I've ever watched as well. The story is involving a mysterious evil demon thing, the acting by the possessed people are amazing! the main actors did a great job on certain emotions. I personally like the priest while exorcism, he portrays it very well. The friendship that was built throughout the drama was touching too. No love interest just friendship. I would say Masterpiece! Highly recommended!!!