London: Herbert Jenkins Limited, 1924. First Edition, First Printing. Hardcover. First Edition. Octavo, original green cloth titled & with a pictorial device in black on front panel, titled in black with publisher's device on spine, publisher's device on rear panel. 311 pp +  pp ads at rear. A very good, clean copy. Very Good. Item #309514
¶ "An exciting detective story, which provides the investigators with a most baffling mystery to elucidate."