Robert Eustace was the pen name of Eustace Robert Barton (1854–1943), an eng doctor and author of mystery and crime fiction with a theme of scientific innovation. He also wrote as Eustace Robert Rawlings. Eustace often collaborated with other writers, producing a number of works with the author L. T. Meade and others.L. T. Meade was the pseudonym of Elizabeth Thomasina Meade Smith (1844–1914), a prolific writer of girls' stories. "A Master of Mysteries" is a collection of exciting classic ...