Her famous detective novel. First uissue, first state with the scarce errata slip present, with “!” for “.” on page 378 and “errific” for “terrific” to page 227. Attractive bookplate to front pastedown. Light foxing to half title and a few light handling marks. Spine splitting and needs minor repair at edge of rear panel (see scan) and reflected in price, otherwise a VG copy of this classic Golden Age Detective novel.