Senator Frank Church of Idaho was an unlikely hero. He led congressional opposition to the Vietnam War and had become a scathing, radical critic of what he saw as American imperialism around the world. But he was still politically ambitious, privately yearning for acceptance from the foreign policy establishment that he hated and eager to run for president. Despite his flaws, Church would show historic strength in his greatest moment, when in the wake of Watergate he was suddenly tasked with investigating abuses of power in the intelligence community. The dark truths that Church exposed—from assassination plots by the CIA, to links between the Kennedy dynasty and the mafia, to the surveillance of civil rights activists by the NSA and FBI—would shake the nation to its core. Pulitzer Prize–winning reporter James Risen tells the gripping, untold story of truth and integrity standing against unchecked power.