IN THIS SUSPENSE-PACKED THRILLER,
A GENETIC EXPERIMENT GOES HORRIBLY WRONG . . .    

During a savage snowstorm, a private jet slams into the rugged California high country. In its wake lies a litter of twisted fuselage, mangled corpses . . . and enough infectious toxins to wipe out most of humanity. 

Two people—an expert mountaineer and a female FBI agent—find the wreckage and its hazardous contents. Now, they're the target of a dangerous enemy that will kill to keep a conspiracy concealed. 

As the blizzard rages and a madman threatens genocide, trained assassins chase the pair deep into the frigid wilderness, where basic instincts take over . . . and where the only law is the law of survival. 

“Dun’s readers will delight in well-executed plot twists
that draw you into the action with seamless ease. Escapist fiction of the first order."
—CLIVE CUSSLER

"Well written, full of suspense..."
—STEVE ALTEN,
New York Times bestselling author of Meg