CV. [New York]: Tor Books, . Octavo, boards. First edition. "An ocean going city of the future, known as the Sea Venture, is plagued by a mysterious parasite which enters people's bodies. A goodish high-tech thriller by an old master of the genre." - Pringle, The Ultimate Guide to Science Fiction, second edition (1995), p. 83. Sequels are THE OBSERVERS (1988) and A REASONABLE WORLD (1991). Anatomy of Wonder (2004) II-607. A fine copy in fine dust jacket. (#145159).
"First printing: May 1985" on copyright page.