Eugene O’Neill’s Long Day’s Journey into Night, a deeply personal and poignant play that stands as his greatest work, was first published in 1956. This edition, recognized for its authoritative nature, includes a foreword by Harold Bloom who lauds the play as “Eugene O’Neill’s masterpiece.” The narrative delves into the innermost struggles of an American family, highlighting their destructive cycles of addiction and deceit while exploring themes of love, loss, and redemption. Winning the Pulitzer Prize in 1957, this play has resonated with audiences for over six decades, selling more than one million copies worldwide. It is a profound exploration of human frailty and resilience, making it an indispensable piece of American drama literature.