Okay, this is a Great Korean film. Good plot, great acting, lots of scary moments, good twists. The woman that plays the lead detective is tough but also vulnerable. There were a few things that didn't make sense to me at first, but when I went back to watch it again, I knew what was going on. Anyway, if you like Asian horror movies this has all the creepy elements (long flowing black hair cascading from ceilings, red bloody eyes with a pure white face, lots of suspense) plus a few interesting surprises. IT was very good and I really recommend it.