Philadelphia & London: J. B. Lippincott Company, 1928. Octavo, pp. [1-10] 11-320, original red cloth, front and spine stamped in black, top edge stained green. First U. S. edition. A locked room mystery featuring Dr. Hailey. [Reference: Adey, Locked Room Murders and Other Impossible Crimes (1991), p. 269. Hubin, p. 883].