I've had this on my watchlist for ages and was putting it off because horror is not my favorite genre. However, I was bored and tried it and it's one of the best decisions I've made. The story revolves around three characters who's lives are intertwined by a horrible spirit who kills their family members. There are many reviews but I want to focus on the chemistry of the actors and how well they immersed themselves into the characters they portrayed. What makes a drama entrancing is the magic that happens when actors can bounce off of each other well and a great script. This drama has both. The supernatural was blended into the real world and the scary moments were believable. It kept me on the edge of my seat but I will say it can be emotionally tiring since the drama is in equal parts horror and drama. My favorite genre is drama and the way the characters had to push past their differences, their feelings of guilt and anger, and their loneliness in order to eventually defeat the big bad makes you root for them with all your heart. Their relationships with each other were the heart of this story. The complexity in their bonds made this drama sing. There were intimate moments where one or another character would care for the other in such loving ways. These moments were small but interspersed and made the scenes where they tried to save each other and even sacrifice themselves for another even more poignant. This is especially true between the priest and Yoon Hwa Pyung. This drama was a masterpiece and will go down as one of my favorite kdramas. Also the music was touching and perfectly matched the tension and emotion of the scenes. A+