D'Arblay Mystery, The by R. Austin Freeman (1862 - 1943)

Stephen Gray is a recent graduate of medicine. As he is walking through a sleepy English village he stumbles upon a tragedy involving a beautiful young girl and immediately becomes involved in assisting her. In doing so he enlists the help of his mentor, Dr. Thorndyke, a renowned forensic investigator. Thorndyke and his aide, Polton, use their skills to unravel a bizarre mystery with many intriguing twists and turns. (Summary by Howard Skyman)