"The Bad Seed" is a 1956 psychological thriller directed by Mervyn LeRoy, based on the play by Maxwell Anderson. The film tells the story of Rhoda Penmark, a seemingly perfect young girl who is revealed to have a dark and murderous nature. As her mother, Christine, uncovers the truth about her daughter's actions, the tension escalates, leading to a chilling climax. The film explores themes of nature versus nurture, questioning whether evil is inherent or shaped by environment. Patty McCormack delivers a memorable performance as Rhoda, earning critical acclaim for her portrayal of the charming yet sinister child.