NEW YORK TIMES BESTSELLER • "Terrifying . . . a spellbinding biomedical thriller."-San Francisco Examiner

"A classic that will grip you until the end."-Houston Chronicle

A phone call in the dead of night brings Joe Lassiter shattering news: His sister and young nephew have died in a fire in their home near Washington, D.C. Yet Lassiter soon learns a chilling fact: His loved ones were brutally murdered before the blaze was set.

The mysterious suspect's identity only raises more questions. Then Lassiter uncovers another crime-another innocent mother and child murdered. The more he investigates, the larger the web of conspiracy grows, as Lassiter's search for answers leads him on a dangerous international chase toward a truth that will shock him- and the world-to the very core. . . .