Level Five by Hart-Davis, Duff

Light shelfwear to edges and boards. DJ protected with mylar and not clipped. Pages tight and clean. Library discard with usual marks and attachments. Pocket removed. 311 pages. HardCover Binding. Year: 1982. ISBN: 0689112572. Martin Newman, a deep-sea diver, is hired by a shadowy firm called Eurosalz to recover a cache of steel cases from a flooded mine somewhere in Germany. Tight security surrounds the operation-not even Newman knows exactly where he is working-and the task is difficult and technically demanding. Just as success seems to be within reach, the dive is violently sabotaged; and when Newman regains consciousness, he finds that he is in a hospital-on the wrong side of the Iron Curtain.