The New York Times bestselling author of Code Girls reveals the untold story of how women at the CIA ushered in the modern intelligence age, a sweeping story of a "sisterhood" of women spies spanning three generations who broke the glass ceiling, helped transform spycraft, and tracked down Osama Bin Laden. Upon its creation in 1947, the Central Intelligence Agency instantly became one of the most important spy services in the world. Like every male-dominated...