Ballantine, New York, April 1976, 1^st.  ISBN 0-345-24867-8.  MMPB, 213 pages.  Good plus; edge and cover wear, small scars and impressions from sticker removal; light creases and small corner bends; binding tight.  Bookstore stamp on first page, bottom page block and verso of rear wrap; remainder of interior clean and unmarked with tanned pages.  Cover art by The Brothers Hildebrandt.  ‘He did not exist … or did he?  He had destroyed his punch cards and changed his face.  There was no credit card, birth record, or passport for him in the International Data Bank.  His names were many … and he chose.  His occupation was taking megarisks in the service e of a vast global detective agency.  His interworld assignments were highly lucrative, incalculably vital, and terrifyingly deadly.  And more often than not his life was a living hell!’ (from rear wrap)