A fire in a Copenhagen bookstore ignites a relentless hunt across four continents. Commander Gray Pierce dives headlong into a mystery that dates back to Nazi Germany--and to horrific experiments performed in a now-abandoned laboratory buried in a hollowed-out mountain. Meanwhile, madness ravages a monastery in Nepal, as Buddhist monks turn to cannibalism and torture. Lisa Cummings, investigating the atrocity, is suddenly a target of a brutal assassin...