Summary:

Set sometime in the near future, Cast of Shadows has as its protagonist Davis Moore, a successful private practice physician specializing in cloning human babies for infertile couples. Early in the book, Anna Kat, his high school senior daughter, is murdered and raped. (For a while a likely suspect is Mickey the Gerund, a right wing extremist member of the Hands of God with a fascinating grammatical moniker never explained, who shoots cloning physicians, including Dr. Moore, in the abdomen, a short time before his daughter, Anna Kat, is brutally killed. However, Mickey is only a shadow of a suspect and quickly becomes supplanted by another much more likely villain. Mickey goes on to kill, by various methods, dozens of cloning physicians and staff by book's end.)

After a year of unsuccessful detective work, the local police return Anna Kat's belongings, including a plastic vial with the suspected murderer-rapist's semen. In an act never fully explored by Dr. Moore or the author, an otherwise rational and ethical physician surreptitiously uses the suspect's semen to fertilize a married woman patient.

The offspring, a clone of the suspected killer-rapist, is Justin, who becomes a formidable presence in the book. He is very intelligent--at his psychologist's advice, his parents provide him at an early age with advanced reading materials like Plato (hence one of the allusions to shadows, i.e., Plato's cave, in the book's title and referenced directly on page 118 and indirectly on page 208) and other philosophers. By the time he is a senior in high school, Justin has become a dominant player in the affairs of Dr. Moore; Sally Barwick, a private investigator-turned journalist; and the suspected killer-rapist--his origin of the species as it were.

This book has a number of subplots all of which radiate from the initial cloning and the various members of the extended family and professional staff involved in it, some knowingly, most not. There are narrative threads involving the suspected murderer rapist-now-prominent attorney, Sam Coyne; the triangle of Dr. Moore and Jackie, his alcoholic wife, and Joan, his attractive pediatrician associate; Mickey the Gerund's various murderous and obsessional religious activities and reflections; Justin's life in school and involvement with Sally Barwick's investigation of a serial killer called The Wicker Man; and, most especially, the development of Shadow World, a computer game and a virtual replica of the real world--the world as Justin, Sally, Sam Coyne, and Dr. Davis Moore know it.

Since this is a thriller, it would be inappropriate to divulge more of the plot, which is intricate, often a little far-fetched but always engaging, highly readable and more labyrinthine than most medical thrillers.

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