Another wild ride from Bong Joon-ho, the talented writer/director best known for his monster movie The Host but also the helmer of the equally impressive detective thriller Memories of Murder.
This is, to some extent, a return to the mystery genre for Bong, starring Kim Hye-ja in a go-for-broke performance as an older woman in a smallish Korean town whose slightly retarded son (Bin Won) is arrested for the murder of a local teenage girl. The mother, frustrated by the inaction of the police and her sleazy lawyer, sets out to find the real killer.
What follows is a rich combination of suspense, surprise, and eccentric dark humor, as one crazy plot twist leads to another. There's not much more I can say about this film without ruining anything, so all I will say is that it is well worth your time. Seek it out.