A multilayered international thrill ride at breakneck pace, reminiscent of The Rule of FourThe Arctic, 1897: Nils Strindberg crashes his hydrogen balloon during the mysterious Andr�e Expedition to the North Pole.Germany, 1942: Gruesome and inexplicable experiments are performed on concentration camp prisoners.Sweden, present-day: Cave diver Erik Hall finds a dead body wearing an ancient ankh, buried deep in an abandoned mine. Religious symbol expert Don Titelman seeks out Erik to study the ankh�but finds Erik dead. Don is the prime suspect, and soon he�s being chased across Europe to escape a secret society that will do anything to get their hands on the ankh. . . .In this international bestseller, each of these fascinating strands weaves together to create a mind-blowing cross-genre thriller that includes arctic explorers, a secret railroad network, Norse mythology, Nazis, and ancient symbols�and a shocking secret that�s been hidden for centuries.