New York: Ace Books, [1990]. Octavo, boards. First edition. "...this is a near future thriller about attempts to sabotage a starship program." "The novel also goes into "...free will, genetics and humanity's Outward Urge." - Pringle, The Ultimate Guide to Science Fiction, second edition (1995), p. 295. 1990 Hugo nominee. [Reference: Anatomy of Wonder (2004) II-616].