Vitals

Blending fierce, fast plots with vivid characters and mind-bending ideas, Greg Bear has mastered a powerful alchemy of suspense, science, and action in his gripping thrillers. Darwin's Radio was hailed across the country as one of the best books of the year. His newest novel, Vitals, begins with a harrowing descent to a netherworld at the very bottom of the sea--and then explodes to the surface in sheer terror.Hal Cousins is one of a handful of scientists nearing the most sought after discovery in human history: the key to short-circuiting the aging process. Fueled by a wealth of research, an overdose of self-confidence, and the money of influential patrons to whom he makes outrageous promises, Hal experiments with organisms living in the hot thermal plumes in the ocean depths. But as he journeys beneath the sea, his other world is falling apart.Across the country, scientists are being inexplicably murdered--including Hal's identical twin brother, who is also working to unlock the key to immortality. Hal himself barely eludes a cold-blooded attack at sea, and when he returns home to Seattle, he finds himself walking into an eerie realm where voices speak to him from the dead . . .

Synopsis from Open Library.