301 pp. Includes frontispiece and illustrations by Lester Ralph, as well as a floor plan of the setting. Author's first novel, and her most significant work, which introduced the 'had I but known' narrative style. A Haycraft-Queen cornerstone. "The Circular Staircase is a mystery novel by American writer Mary Roberts Rinehart. The story follows dowager Rachel Innes as she thwarts a series of strange crimes at a summer house she has rented with her niece and nephew. The novel was Rinehart's first bestseller and established her as one of the era's most popular writers."