Drawing on extensive life-history interviews with serious violent offenders, this book offers a unique socio-historical analysis of gang membership and gang evolution in Glasgow, Scotland's largest city. The book chronicles the lives of young men in and around Glasgow from early childhood to present day and examines the lived experience of family, friendship, community, and crime. It demonstrates how street reputations are won and lost and how gang membership is not a single event but an experiential process of offending, victimisation, consensus, and conflict. The book follows the young men's descent into knife crime and street violence and the impact of imprisonment on their life chances. Detailed narratives capture how they individually and collectively transitioned from street violence to profit-driven organised crime, before eventually disengaging from gangs and desisting from offending. The book concludes with an in-depth discussion of the evolution of gangs and organised crime in the 21st century and in the inner-workings of Scotland's marketplace for illegal goods and services, with implications for police, practitioners, and policymakers. A page-turner from start to finish, Scotlands' Gang Members is a truly unique contribution to knowledge about gangs and crime, written to high academic standards but readable and accessible to all.