Answer
The play "Long Day's Journey into Night" by Eugene O'Neill, not Sidney Lumet, delves into the complexities of dysfunctional family dynamics. Set over a single day, it portrays the Tyrone family grappling with addiction, marital conflicts, and emotional turmoil. O'Neill's semi-autobiographical drama offers a poignant exploration of familial struggles and the human condition, leaving a lasting impact on audiences.