Teenager David Williams, shaken after hitting a man while driving drunk on a rainy night, rushes home and confesses to his father, Grant, a college professor. Taking charge, Grant goes to the precinct and claims responsibility for the crime. Det. Rizzo questions the professor’s oddly composed demeanor, though his lieutenant dismisses the concern. Meanwhile, Grant’s wife, Marian, grows uneasy and urges David to tell the truth — just as news breaks of a murdered young coed with ties to the Williams family.