Deep in the jungles of Peru the contest of the century is underway. It's a race to locate a legendary Incan idol - one carved out of a strange kind of stone. But a stone which, in the present age, could be used as the basis for a terrifying new weapon. The US Army wants this prize at any cost. But they are not alone.... The only clue to the idol's final resting place is to be found in a 400-year-old manuscript. Which introduces Professor William Race, a mild-mannered but brillant young linguist, who is unwillingly recruited to interupt the document that could lead the US team to the idol itself. So begins the mission that will lead Race and his armed companions to a mysterious stone temple hidden in the foothills of the Andes. This is a carefully contrived sanctuary seething with menace and unexpected that Race and his team discover they have broken golden rule... Some doors are meant to remain unopened.