Amaryllis Fox was in her last year as an undergraduate at Oxford, studying theology and international law when her writing mentor Daniel Pearl was captured and beheaded. Galvanized by this brutality, Fox applied to a master's program in conflict and terrorism at Georgetown's School of Foreign Service, where she created an algorithm that predicted, with uncanny certainty, the likelihood of a terrorist cell arising in any village around the world. At twenty-one, she was recruited by the CIA. At twenty-two, she was fast-tracked into advanced operations training, sent from Langley to "the Farm," where she lived for six months in a simulated world learning how to use a Glock, how to get out of flex-cuffs while locked in the trunk of a car, how to withstand torture, and the best ways to commit suicide in case of captivity. At the end of this training she was deployed as a spy under nonofficial cover—the most difficult and coveted job in the field—and sent to infiltrate terrorist networks in remote areas of the Middle East and Asia. Life Undercover is exhilarating, intimate, fiercely intelligent—an impossible-to-put-down record of an extraordinary life and of Amaryllis Fox's astonishing courage and passion.