New York: P.F. Collier & Son Company by special arrangement with The Crime Club, Inc, Doubleday Doran and Company. (c 1929) dj. Hardcover - An early copy of this Haycraft Queen Cornerstone, The first mystery featuring Lieutenant Valcour, a French-Canadian detective attached to the NYPD, who must solve "the murder of a man who was murdered twice. At 8:34 P.M. the body is discovered by police. By midnight the corpse had been revived by the injection of adrenalin into the heart. By one o'clock he had been murdered again." A bit farfetched, but the twist at the end makes it worth reading. Basis for the 1931 film featuring William Boyd. 288 pp.

New York: The Century Company, 1913. Hardcover first edition - A Haycraft Queen Cornerstone. Although the actual publication of this book preceded the Great War and the beginning of the Golden Age of Detective fiction, Haycraft considers this the first detective novel of the modern era ('Murder for Pleasure, p. 113) This was first accepted for publication by Century, but both the US and UK editions (under the better known title "Trent's Last Case") appeared virtually simultaneously in March 1913. Not only was this novel extremely influential, it remains a pleasure to read (or re-read) more than 100 years later. Despite the UK title, this is the first novel to feature Trent. 300 pp.