A TELEGRAPH BOOK OF THE YEAR 'Engaging and visceral ... Reads like a thriller'Financial Times 'Riveting and often deeply disturbing ... A punch to the stomach'Sunday Times 'Ebner has done some gutsy, thought- provoking research'Sunday Telegraph 'Fascinating and important'Spectator By day, Julia Ebner works at a counter-extremism think tank, monitoring radical groups from the outside. But two years ago, she began to feel she was only seeing half the picture; she needed to get inside the groups to truly understand them. She decided to go undercover in her spare hours - late nights, holidays, weekends - adopting five different identities, and joining a dozen extremist groups from across the ideological spectrum. Her journey would take her from a Generation Identity global strategy meeting in a pub in Mayfair, to a Neo-Nazi Music