Doctor Morelle is a 1949 British mystery film directed by Godfrey Grayson and starring Valentine Dyall, Peter Drury and Hugh Griffith. It is also known by two alternative titles: Dr. Morelle: The Case of the Missing Heiress or simply The Case of the Missing Heiress. It was made by Hammer Films, based on the popular long running BBC radio series written by Ernest Dudley and starring Cecil Parker. Dudley also wrote many novels and short stories featuring the character of Morelle.