New York: The Macmillan Company, 1923. Octavo, pp. [1-8] [1-2] 3-362, fly leaf at rear, 21 full-page and many smaller illustrations by Jean de Bosschere throughout the text, original maroon cloth, front panel ruled in blind, spine panel stamped in gold. First edition. Collects a short novel, "The Flaw in the Crystal," and six short stories. A major collection of supernatural fiction. "An underrated writer ... Excellent." - Bleiler, The Guide to Supernatural Fiction 1478. "Sinclair's stories are among the most outstanding examples of the ghost story as moral fable." - Barron (ed), Horror Literature 3-178. Sinclair's "contribution to the genre, small as it is, is notable." - Sullivan (ed), The Penguin Encyclopedia of Horror and the Supernatural, pp. 387-88. [Reference: Ashley, Who's Who in Horror and Supernatural Fiction, p. 163. Schlobin, The Literature of Fantasy 957. Tymn (ed), Horror Literature 4-198. Bleiler (1978), p. 180. Reginald 13211].