London: Hodder & Stoughton Ltd, 1927. First Edition. Red cloth hardback, in original colour illustrated dust jacket. Dust jacket has one or two nicks to spine. Offsetting from dust jacket to FFEP. On the title page, Le Queux is described as 'The Master of Mystery'! Overall in good condition. 312 pages plus 8 pages of adverts to rear. 180 x 115 mm (7 x 4½ inches).