This book presents an in-depth analysis of how statutory and third sector organisations have faced the challenge of dealing with former 'terrorists'. Offering a theoretically robust, empirically rich account of work with ex-prisoners and those considered 'at risk' of involvement in extremism in the United Kingdom, Marsden dissects the problems governments are facing in dealing with the effects of 'radicalisation'. Increasingly, governments are struggling with the challenge of dealing with those who have become involved in extremism, and yet, comparatively little is known about how and why people renounce violence. Nor are existing efforts to 'deradicalise' extremists well understood. Arguing that reintegration is a more appropriate framework than 'deradicalisation', Marsden looks in detail at the mechanisms by which people can be supported to move away from extremism. By drawing out implications for policy, practice and academic debates around disengagement from radical subcultures, this book makes a significant contribution to an issue only likely to grow in importance for scholars of criminological theory, terrorism and justice.