"Defending Jacob" is a legal thriller novel by William Landay that follows the story of Andy Barber, an assistant district attorney whose son, Jacob, is accused of murdering a classmate. As the investigation unfolds, Andy grapples with his loyalty to his son and the evidence against him, leading to a complex moral dilemma. The narrative explores themes of family, justice, and the impact of crime on relationships. As Andy delves deeper into the case, he uncovers secrets that challenge his understanding of truth and innocence, ultimately questioning what it means to defend someone you love.