The Patient in Room 18

The Patient in Room 18 is a 1929 mystery novel written by Mignon G. Eberhart. The novel was Carpenter's first published novel, and follows the adventures of Nurse Sarah Keate who would later appear in more of Eberhart's works, and became one of the most popular mystery characters of the time.The novel later served as the basis for a 1938 motion picture released by Warner Brothers, with the same title, starring Patric Knowles and Ann Sheridan.