For the followers of QAnon, the idea that Donald Trump was anointed by God to stop a depraved deep state government that sexually abuses, kills and eats children is an unquestionable fact. But how did a conspiracy theory from the dark side of the internet convince millions across the world to believe the unbelievable? Who are these people? And more importantly, what do they want? Investigative journalist Will Sommer dives head-first into QAnon: the great American conspiracy with global consequences. With first-hand access to leading figures in the Q movement, Sommer examines how the internet has radicalised politics, threatened democracy, and inspired insurrection and assassination, to show how we got here and how we can chart a path out.