New York: William Morrow and Company, Inc., [1991]. Octavo, First edition. A man who was orphaned as a child discovers his father before birth was genetically enhanced for increased intelligence. He sets out to find the truth.

London, Boston: Faber and Faber, [1987]. Octavo, boards. First edition. Winner of the 1988 Arthur C. Clarke Award for best SF novel published in Britain in 1987. 1988 Nebula nominee. [Reference: Anatomy of Wonder (2004) II-1147. Broderick and Di Filippo, Science Fiction: The 101 Best Novels, 1985-2010 #12. Sargent, British and American Utopian Literature, 1986-2009].