Complete Plays, 1920–1931 by Eugene O'Neill

A collected volume of powerful early 20th-century dramas that probe family conflict, identity, guilt, and the human urge for redemption. Ranging from intimate domestic tragedies to expressionistic and experimental works, the plays combine naturalistic dialogue, bold stagecraft, and interior monologues to explore ambition, racial and social tensions, psychological trauma, and existential despair, marking a major transformation in modern American theatre.