By her friend Sarah's suggestion, high school senior Nicole manipulates test scores to be the valedictorian, but becomes the prime suspect for a series of top-ranked students' murders.
Killer Joe is a 2011 American Southern Gothic crime film directed by William Friedkin. The screenplay by Tracy Letts is based on his 1993 play of the same name. The film stars Matthew McConaughey in the title role, Emile Hirsch, Juno Temple, Gina Gershon, and Thomas Haden Church.