The United States government is given a warning by the pre-eminent biophysicists in the country: current sterilization procedures applied to returning space probes may be inadequate to guarantee uncontaminated re-entry to the atmosphere. Two years later, seventeen satellites are sent into the outer fringes of space to "collect organisms and dust for study." One of them falls to earth, landing ina desolate area of Arizona. Twelve miles from the landing...

In the middle of the South Pacific, a thousand feet below the surface of the water, a huge vessel is discovered resting on the ocean floor. Rushed to the scene is a group of American scientists who descend together into the depths of the sea to investigate this astonishing discovery. What they find defies their imaginations and mocks their attempts at logical explanations. It is a spaceship.

Is a loved one missing some body parts? Are blondes becoming extinct? Is everyone at your dinner table of the same species? Humans and chimpanzees differ in only 400 genes; is that why an adult human being resembles a chimp fetus? And should that worry us? There's a new genetic cure for drug addiction—is it worse than the disease?

We live in a time of momentous scientific leaps; a time when it's possible to sell our eggs and sperm online

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A computer specialist suffering from violent seizures has electrodes implanted in his brain to soothe his impulses. He soon learns to program the implants himself, and escapes the hospital, a homicidal maniac with a deadly agenda.