NEW YORK TIMES BESTSELLER The New York Times bestselling author of the acclaimed Dark Invasion, channels Erik Larson and Ben Macintyre in this riveting biography of Betty Pack, the dazzling American debutante who became an Allied spy during WWII and was hailed by OSS chief General "Wild Bill Donovan as "the greatest unsung heroine of the war." Betty Pack was charming, beautiful, and intelligent--and she knew it. As an agent for Britain's...