A whole generation informs, entertains and expresses itself on TikTok. How has it outshone its rivals in just a few years? Here Journalist and author Chris Stokel-Walker tells the inside story of the app for the first time. He has interviewed scores of people connected to the short-form video platform, including current and ex-employees and some of its biggest stars, gleaning never-before-seen insights into its influencer ecosystem. The story of the world's favourite app.