Anna Katharine Green (1846-1935) was a pioneering figure in the American detective fiction genre, predating Sir Arthur Conan Doyle's iconic Sherlock Holmes. Often credited as the mother of the detective novel, Green's writing career was inaugurated with the publication of 'The Leavenworth Case' in 1878, a book known for its well-knit plot and legal accuracy, which arose from her father's profession as a lawyer. Her stories were characterized by their intricate plots, engaging the readers' intellect with her adept use of legal and procedural elements within the narrative. With more than 40 novels to her credit, Green's contribution was seminal in shaping the course of mystery writing, influencing later authors in the genre, such as Agatha Christie. 'The Greatest Works of Anna Katharine Green' covers a vast array of her compelling mysteries, showcasing her ingenuity in crafting suspenseful tales. Notable for her strong female characters, an outlier in her time, Green's literary style seamlessly mixed romantic subplots with intellectual puzzles, setting the standard for future detective fiction. Her legacy endures, highlighting an era where a female writer carved out a new space within what is typically a male-dominated genre.