4. 'What Happened' by Hillary Rodham Clinton
In this uber-personal memoir, Hillary Clinton reveals what it was really like to run against Trump in an election that essentially turned into a deplorable free-for-all. But it's not just a story of the campaign. It's also a cautionary tale for the nation going forward, and for those of us who were left scratching our heads in disbelief at the aftermath, and at the forces that caused the most unprecedented campaign results in American history.