When eminent geneticist Dr. Alvin Hayes suddenly turns up dead, internist Jason Howard believes that the key to his murder lies hidden at the Boston Health Care Clinic's molecular genetics lab and is linked to the bizarre deaths of a number of patients. Reissue.

Dr. Robin Cook (born May 4, 1940 in New York City, New York) is an American physician and novelist who writes about medicine and topics affecting public health.
He is best known for combining medical writing with the thriller genre. Several of his books have been bestsellers on the "New York Times" Bestseller List. Several of his books have also been featured in Reader's Digest.