First Edition, first impression, with printing sequence line showing '1' only. DOUBLE SIGNED by both authors to title page, ‘Lars Kepler’ being the pseudonym for a literary couple, Alexander and Alexandra Ahndoril, who live and write in Sweden. Publisher's red cloth with gilt lettering to spine, and blue endpapers. Clear, removable, archival protective sleeve fitted to dust-jacket. Octavo. pp. 503. Translated from Swedish by Ann Long.  A book in Fine condition in a Fine dust-jacket which is not price-clipped.