Robert Eustace was the pen name

Pen name

A pen name, nom de plume, or literary double, is a pseudonym adopted by an author. A pen name may be used to make the author's name more distinctive, to disguise his or her gender, to distance an author from some or all of his or her works, to protect the author from retribution for his or her...

 of Eustace Robert Barton (1854-1943), an English 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. He is credited as co-author with Dorothy L. Sayers

Dorothy L. Sayers

Dorothy Leigh Sayers was a renowned English crime writer, poet, playwright, essayist, translator and Christian humanist. She was also a student of classical and modern languages...

 of the novel The Documents in the Case

The Documents in the Case

The Documents in the Case is a 1930 novel by Dorothy L. Sayers and Robert Eustace. It is the only one of Sayers' twelve major crime novels not to feature Lord Peter Wimsey, her most famous detective character.-Plot:...

, for which he supplied the main plot idea and supporting medical and scientific details.

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