Imagine a world in which a vast network of incels and other misogynists are able to operate, virtually undetected. These extremists commit deliberate terrorist acts against women. Vulnerable teenage boys are groomed and radicalised. You don't have to imagine that world. You already live in it. Perhaps you didn't know, because we don't like to talk about it. But it's time we start. In this urgent and groundbreaking book, Laura Bates, bestselling author and founder of The Everyday Sexism Project, goes undercover to expose vast misogynist networks and communities. It's a deep dive into the worldwide extremism nobody talks about. Interviews with former members of these groups and the people fighting against them gives unique insights on how this movement operates. Ideas are spread from the darkest corners of the internet - via trolls, media and celebrities - to schools, workplaces and the corridors of power, becoming a part of our collective consciousness. Uncensored, and sometimes both shocking and terrifying - this is the uncomfortable truth about the world we live in. And what we must do to change it.