Eugene O'Neill, Nobel Laureate in Literature and Pulitzer Prize winner, is widely known for his full length plays. However, his one-act plays are the foundation of his work - both thematically and stylistically, they telescope his later plays. This collection aims to fill the gap by examining these texts, during what can be considered O'Neill's formative writing years, and the foundational period of American drama. A wide-ranging investigation into O'Neill's one-acts, the contributors shed light on a less-explored part of his career and assist scholars in understanding O'Neill's entire oeuvre.