In Copenhagen . . . a suspicious bookstore fire propels Commander Gray Pierce on a relentless hunt across four continents—and into a terrifying mystery surrounding horrific experiments once performed in a now-abandoned laboratory buried in a hollowed-out mountain in Poland.

In the mountains of Nepal . . . in a remote monastery, Buddhist monks inexplicably turn to cannibalism and torture—while Painter Crowe, director of Sigma Force, begins to show signs of the same baffling, mind-destroying malady . . . and Lisa Cummings, a dedicated American doctor, becomes the target of a brutal clandestine assassin.