For eleven years Kate Fall was one of David Cameron's closest advisors. During some of the most significant political events of our times - the Arab Spring, the financial crash and a European referendum that has changed the face of British politics forever - she sat right outside the door of the Prime Minister's office, earning herself the title of 'gatekeeper'.

Fall takes us through the Cameron project, from its inception to coalition, reshuffles, political scandals, two general elections and three referendums. She speaks frankly and honestly about the Conservatives' key players, their project to modernise the party, how the coalition worked (and how it didn't). Shedding light on the world behind the public facade of politics, she reveals what it is like to be a woman at the heart of power: the blood, sweat and toil, the victories and regrets, the friendships and fall outs, the chaos and camaraderie.

Politics tests any relationship with its conflicting priorities of loyalty, belief, and personal ambition. The Gatekeeper is a very personal portrait of life behind the scenes at the centre of power.