Deep in uncharted Peru, the holy town of Bedlam stands at the edge of a forest. The shrine statues move, and anyone who crosses the border dies. But somewhere inside are cinchona trees, whose bark yields quinine: the only known treatment for malaria. On the other side of the Pacific, India is ravaged by the disease. The hunt for a reliable source of quinine is on and, in its desperation, the India Office searches out its last qualified expeditionary. Merrick Tremayne finds himself dispatched to Bedlam, under orders to bring back cinchona cuttings – at any cost.