The shocking elevation of Bannon to head Trump's flagging presidential campaign on August 17, 2016, hit political Washington like a thunderclap and seemed to signal the meltdown of the Republican Party. Bannon was a bomb-throwing pugilist who'd never run a campaign and was despised by Democrats and Republicans alike. Yet Bannon's hard-edged ethno-nationalism and his elaborate, years-long plot to destroy Hillary Clinton paved the way for Trump's unlikely victory. Trump became the avatar of a dark but powerful worldview that dominated the airwaves and spoke to voters whom others couldn't see. Trump's campaign was the final phase of a populist insurgency that had been building up in America for years, and Bannon, its inscrutable mastermind, believed it was the culmination of a hard-right global uprising that would change the world. Any study of Trump's rise to the presidency is unavoidably a study of Bannon. Devil's Bargain is a tour-de-force telling of the remarkable confluence of circumstances that decided the election, many of them orchestrated by Bannon and his allies, who really did plot a vast, right-wing conspiracy to stop Clinton. To understand Trump's extraordinary rise and Clinton's fall, you have to weave Trump's story together with Bannon's, or else it doesn't make sense.