Two American sisters, Christine and Elizabeth Shepherd, are on a silk-buying trip in India for their business in California. After Elizabeth mysteriously disappears, Christine is compelled to challenge the ineffectual U.S. and Indian bureaucracies and venture alone, with various strangers as guides, to find her sister. Disguised in the traditional female garb of some Islamic cultures, Christine continues her search in Afghanistan and Pakistan. She navigates the mysterious tribes of the Pashtuns, has a dangerous encounter with the Taliban, and learns to fear the ?Jinn?, the devils that dominate the superstitions of the people she must understand to survive.