Miss Diana Marburg, also known as "The Oracle of Maddox Street", is a palmist and female occult detective created by the writers L. T. Meade and Robert Eustace. The character is unusual for Meade, insofar that there is a supernatural element involved in her detective skills, though elements of this are taken from the authors' character John Bell in The Master of Mysteries. Diana Marburg first appeared in the New York edition of Pearson's Magazine in February 1902, in a story entitled 'The Dead Hand'. Two further stories were published, 'Finger Tips' (August 1902) and 'Sir Penn Caryll's Engagement' (December 1902). The stories were published in book form along with seven non-Marburg stories in The Oracle of Maddox Street (Ward, Lock & Co., 1904).