first UK edition of this rare crime novel. octavo 7.6 by 5.2 inches (19.5 by 13 cms) original orange cloth, with the 8-page publisher's catalogue bound at end, light foxing to title and first two text leaves, a bit heavier on the half title, book block slighty bowed, slight lean. but a very clean copy, sound and firm in the binding, no internal marks, inscriptions etc.