Joong-ho, a pimp and former cop is losing his girls. As more and more go missing he digs into it and sees that they all have a final unnamed client in common. He hunts the guy down and hands him over to the cops but when the cops release him due to lack of evidence Joong-ho goes on a rogue mission to take the guy down.
Can't believe I never heard of this one before. It's a fast-paced wild ride from beginning to end. The killer admits to killing the girls and also admits that the last one is alive but is completely uncooperative. The acting is sublime, the subject matter is tense. This film was reflective of a very controversial case involving a brutal serial killer in Korea which sparked a huge debate about martial law, if your interested you can read about it here.