This seems a far cry from horror stories, particularly as it reveals the author in the role of sound scholar and thoughtful biographer. His subject is Charlotte de Corday; his period, the French Revolution. Charlotte de Corday was a country girl, who would have been a nun had the Revolution not caught her: in its trammels. A Girondist -- a fanatic -- she nursed the growing hatred for the tyrant Marat, and killed him in his bath. Shearing has done an extraordinary job -- presented a vigorous picture of the period, and a succession of brilliant pen portraits of leading spirits. You may know which of your customers specialize in this period; you have a good market in colleges and public libraries.