The Unconquered: In Search of the Amazon’s Last Uncontacted Tribes (Broadway Books, $16.00) is journalist Scott Wallace’s account of his perilous three-month journey into the heart of the Amazon to track the flecheiros, the last of the jungle’s aboriginals. Wallace joins the head of Brazil’s Department of Isolated Indians in his uphill quest to keep the tribe safely locked away from the rest of the world. “A rousing adventure tale.”—Wall Street Journal. Wallace is a frequent contributor to National Geographic. His photography has appeared in several publications, including Smithsonian, Outside, and Newsweek. This is his first book.