Sarra Gilbert believes her mother is an "evil god." She then stabs her 227 times, bludgeons her with a fire extinguisher, and tries to decapitate her. After a plea of not guilt by reason of insanity, the jury has to decide: was this gruesome parricide brought on by a life of abuse, drugs, and severe mental illnesses? Or is Sarra Gilbert, deep down, a cold-blooded killer looking for revenge?