Doctor Morelle (1949)
Also known as:
Doctor Morelle - The Case of the Missing Heiress
Disturbed by the disappearance of a wealthy friend Ms Frayle goes undercover to investigate. Enlisting the aid of the butler they find Cynthia's charred body not far from her house but her accomplice is attacked and murdered. Realising the danger she is in, Frayle contacts master sleuth Dr Morelle who, donning a variety of brilliant disguises, manages to establish both motive and the murderer.