Collins, London, 1972, Crime Club.  ISBN 0-00-244710-X.  Hard cover, 251 pages.  Very good; red boards with black lettering and logo on spine; spine ends lightly bumped; binding sound.  Dust jacket with price intact has edge and cover wear, some rubs and scratches, lower front edge tear, small scar on front panel, some age toning.  Book interior clean and unmarked with tanned pages.  ‘The atmosphere of suspense is cleverly sustained throughout, from the moment that Lady Verity Destrier divulges to her friends that for several years she has received threatening letters from a man who imagines that she had done him a bad turn during the war.  That night the last of the series is delivered …  Danger is very near, for with Verity Destrier the mysterious correspondent has a long score to settle – he is the self-appointed avenger of seven hundred men!’ (from front flap)