Humanity's very existence is at stake in this latest hair-raiser by Perdue (Daughter of God), a no-holds-barred biogenetic thriller. Lara Blackwood, founder of GenIntron, a company devoted to gene manipulation as a method of fighting genetic diseases such as Tay-Sachs and sickle-cell anemia, is a tough hybrid of brilliant scientist, beauty and fighter. As the novel begins, GenIntron has been forced into economic difficulty and bought by the internationally powerful Japanese Daiwa Ichiban Corporation and its racist head, Tokutaro Kurata. In his first move, Kurata perverts Blackwood's work by creating a new genetic weapon, graphically named Slatewiper, with which he intends to rid Tokyo of its hated Korean immigrants. Thousands of dead Koreans fill the streets, and puzzled doctors postulate a new and unknown disease. Kurata dreams of reviving Japanese militarism, refusing to acknowledge defeat in WWII and denying the horrifying Japanese atrocities of that war and earlier Asian wars. He plans to sell the deadly gene to nations wishing to eliminate their own minorities, or for use against enemies, while plotting to promote Japanese superiority and racial purity. Aiding Kurata is Blackwood's nemesis, Sheila Gaillard, as beautiful and brilliant as Blackwood and altogether deadly, and Kurata's nephew and heir, American-taught Akira Sugawara, loyal but finally driven to rebellion by the horrors he witnesses. Perdue never strays far from form—garish violence, one-dimensional characters, mechanical climax—but in the light of current medical epidemics, this is a timely offering. (July)