Description

---

From New York Times bestselling author Tess Gerritsen, a terrifying novel of deadly proportions as an ER doctor tries to determine the cause and cure of a fatal and mysterious virus before it becomes an epidemic.

The quiet overnight shift at Springer Hospital ER suits Dr. Toby Harper just fine—until she admits a man in critical condition from a possible viral infection of the brain. The delirious man barely responds to treatment—and then disappears without a trace. Before Toby can find him, a second case occurs, revealing a terrifying fact: the virus can only be spread through direct tissue exchange. Following a trail of death that winds from a pregnant sixteen-year-old prostitute to her own home, Toby discovers the unthinkable: the epidemic didn't just happen—someone let it loose....

About the Author

---

Tess Gerritsen left a successful practice as an internist to raise her children and concentrate on her writing. She gained nationwide acclaim for her first novel of medical suspense, the New York Times bestseller Harvest; she followed her debut with the bestsellers Life Support and Gravity. Her other novels include Body Double, The Sinner, The Apprentice, and The Surgeon. Tess Gerritsen lives in Maine.

Praise For…

---

John Saul Grabs you and holds you from page one....Be prepared to drop all your obligations until you finish.

People Richly drawn hospital scenes....Chilling science...and breathless ER-style pacing....A quick, delightfully scary read.

Publishers Weekly [A] spine-tingling medical chiller....The pieces in this adeptly crafted Rubik's cube don't click into place until the final page.