Locked Doors, published in 1914 by Mary Roberts Rinehart, is a detective novel featuring Nurse Anne Adams, who cares for two young boys in a mysterious household. As she navigates her duties, she uncovers unsettling secrets, including locked doors and the family's fearful behavior, leading her to suspect a hidden menace. This work is notable for its blend of psychological suspense and mystery, showcasing Rinehart's influence in the genre, often likened to Agatha Christie.
