Enter a Murderer is Ngaio Marsh's second novel featuring the perceptive and sophisticated Inspector Roderick Alleyn. Set against the vibrant backdrop of a London theater, the story begins when a shocking murder occurs on stage during a live performance. What appears at first to be a tragic accident turns into a sinister crime as one of the actors is killed in full view of the audience, sparking a tense investigation. Inspector Alleyn is drawn into the world of actors, playwrights, and theatrical rivalry, uncovering hidden tensions and jealousies simmering beneath the surface. As he interviews cast members and untangles the secrets of the theater, Alleyn's meticulous approach and insight reveal complex motives and a chilling premeditated plan. With its engaging mix of drama, suspense, and a cleverly woven plot, Enter a Murderer captures the spirit of Golden Age mystery while offering readers an intriguing glimpse into the world of theater. Marsh's skill in creating vivid characters and atmospheric settings shines in this classic mystery, making it a treat for fans of both detective fiction and theatrical intrigue.