This movie starts out with some promise, but any credibility is completely thrown out the window in the third act when it turns into a complete Oldboy ripoff. There's nothing wrong in taking inspiration from Park Chan-wook's brilliance as The Chaser and I Saw The Devil does, but this movie does it shamelessly without offering anything new. It starts out interesting with the medical examiner having to contaminate evidence in order to save his daughter, but the end result is so lame.