Well, it may be good if you only want to enjoy suspenseful horror and not care about all the details and all the elements involved in it. The acting is good with those veteran actors and talented rookie actors...
However, I am disappointed at the storyline, it was good at the beginning, but I don't like how it built up... The main thing I hate is that it is quite unrealistic that they made the devil too powerful and underestimated the power of God and exorcism... And I wish they had more research about exorcism too be more accurate... I take this to be a celebration of evil... This can be offensive to Christianity and Catholicism... And the last part where Bae Sung Woo's character turns himself into a vessel to contain the devil, that is just absurd, no one did an exorcism that way... And lastly, why did Cho Yihyun's character have to die? That was so unnecessary
One star only for the sake of the actors