In this book, the authors provide a comprehensive, comparative analysis of legal regulations and practices intended to protect vulnerable groups in Lithuania, Latvia, Estonia and Poland, and in the process, share insights into the current situation and trends in this often-overlooked region. Part I introduces readers to the topic by defining the concept of vulnerable groups and elaborating on its understanding in the European and national contexts. Part II analyses the legal protection of groups characterised by inherent and/or circumstantial vulnerability, while Part III addresses specific crime-related vulnerability issues in the target region. In closing, Part IV puts the spotlight on three specific vulnerable groups in the discussed countries.