As David Cameron's Director of Politics and Communications, Craig Oliver was in the room at every key moment during the EU referendum campaign - interacting with all the players including David Cameron, George Osborne, Barack Obama, Angela Merkel, Jeremy Corbyn, Boris Johnson, Michael Gove, Theresa May and Peter Mandelson. Unleashing Demons: The Inside Story of the EU Referendum is based on detailed notes which tell the story of every key moment from the decision to call a referendum to the subsequent civil war in the Conservative Party and the aftermath of the shock result.