In 1942, Dr. Adele Kibre—dark-haired, wicked-eyed, a medievalist by training—began work as an overseas agent for the Interdepartmental Committee for the Acquisition of Foreign Publications. This Committee was a branch of the Office of Strategic Services (OSS): the wartime predecessor to the CIA, which sought to acquire documents in Europe that the Allies could use to develop intelligence and plan covert operations. Kibre, a scholar, was now also a spy. Kibre was an ideal fit for the job. After receiving a PhD in medieval linguistics (University of Chicago, 1930), she had spent almost a de...