Although this movie reminds me of "The exorcist" in some aspects this isn't a horror film. It seems kind of cliché but it really isn't. There are important twists, it's full of tension moments well d'uh it's a thriller but it's a complex puzzle that it's hard to understand until the ending and still I see lot of people who did't get that ending. At the same time this great story is a mix of genres like comedy, horror, exorcism, gore, etc. STORY When a mysterious stranger moves to a small village in South Korea, the village becomes plagued by sickness. The police think a wild mushroom is to blame, but police officer Jong-goo thinks it may have something to do with the stranger. He meets a woman who gives him some information about this mysterious man, and slowly begins to fall down a rabbit hole that consumes his life. When his daughter starts to show signs of the sickness, it gets personal and he must figure out who to trust and who to avoid. ACTING the performers have a lot of range, from facial expressions to downright melodramatic wailing. Child actor Kim Hwan-hee stands out even among a veteran ensemble cast that includes Hwang Jung-min and Jun Kunimura.These characters are dynamic; the protagonists increasingly vulnerable, and the antagonists all the more menacing. I hope that after this movie Kwak Do Won gets more main roles. REWATCH VALUE I need to watch this movie again because I need to find more clues and I have too many questions. I'm gonna recommend this movie to all my friends because it's that good but don't let those 2,5 hours fool you because it isn't boring at all. OVERALL It runs over 2.5 hours and one leaves the theater wishing there was more to explain. This would devaluate from the experience because one of the film objectives is to make think the audience go back and look at the clues and turning points, to look into one's own sense of values and want to go back to look at some references upon which the script builds. For me it's another masterpiece of Na (the movie director)