From the outset Freya is suspicious of claims that Alex had taken her own life, and sets out to uncover what really happened to her sibling. In her quest for the truth Freya joins forces with Alex's friend, English academic Flin Brodie, a world authority on the prehistory of the Sahara. Flin is also searching for answers - he has devoted his career to tracking down a mythic hidden oasis, an Atlantis of the sands that is reputedly the final resting place of an iconic stone with extraordinary powers - the fabled Benben." In this thriller, we follow Flin and Freya on an adventure that takes them from the towering rock walls of Yosemite National Park to the teeming backstreets of Cairo, from the spectacular temples of the Nile Valley to the arid, unforgiving wastes of the Western Desert.