Most Helpful Girl
Memories of Murder is my favourite movie. It's based on a true story about serial murders in a South Korean village which went unresolved.
I love the quote where the DNA testing is inconclusive at the end and one of the detectives (who always boasts he can look into someone's eyes and tell if someone is lying) looks at the suspect and says 'Fuck, I don't know'. They have to let him go.