Signet, New York, 1972, later printing.  ISBN 0-451-15976-4.  MMPB, 236 pages.  Good reading copy; edge and cover wear, scrape/gouge on front wrap onto spine, light corner bends and reading creases; old water mark on bottom edge and splotches on verso of rear wrap.  Binding tight; interior clean and unmarked with tanned pages.  ‘Shadowjack, Master Thief of Hell.  Who are his foes?  All who would despise him or love the Lord of Bats:  Smage of the Jackass Ears, the Colonel Who Never Died, the Borshin, and Quazer, winner of the Hellgames and abductor of the voluptuous Evene.  One by one, Shadowjack would seek them out and have his revenge, building his power as he goes. … he would unite the World of High Dudgeon, destroy the Land of Filth and bring peace to the Shadowguard.  But to accomplish all, Jack of Shadows must find Kolwynia, the Key That Was Lost….’ (from rear wrap)