Saving fish from drowning

During an ill-fated trip to Myanmar, eleven American tourists are abducted by a renegade tribe that believes that Rupert, a surly teenager with the group, is the reincarnation of their god Younger White Brother, who has returned to save them from their country's militaristic government, in a novel narrated by the ghost of the murdered woman who had set up the trip. 400,000 first printing.