the book will be divided into three sections: 1/ overview of the phenomenology and theoretical conceptualisation of relapse 2/ an up to date description of the process of engagement, assessment and formulation of relapse risk 3/ intervention strategies focused on individual relapse prevention. also, the book will cover service development issues. extensive use of case material will bring the interventions to life. an appendix of clinical tools will also be available online for clinicians to download for direct use with clients.