First edition, first impression, of this Haycraft-Queen cornerstone in detective fiction, and noted rarity: most of the first edition stock was destroyed during the Blitz, when the Germans bombed the Hodder and Stoughton warehouse. Ambler's novel is "a startling, elegant masterpiece of espionage fiction" (Wall Street Journal). Octavo. Finely bound by the Chelsea Bindery in terracotta morocco, spine lettered and decorated in gilt, single rule to boards gilt, twin rule to turn-ins gilt, dark green endpapers, gilt edges. A fine copy.