The authors highlight some significant and enduring systemic concepts and their applications in systemic practice and demonstrate a model of systemic formulation. They review the body of research into family therapy and conclude with a critical review of major recent developments in theory and application. At the end of several chapters are exercises that relate to the ideas and processes found within the chapter to further develop the reader's understanding. The conclusion draws together the ideas found throughout the book, with particular emphasis on the interlocking triangle of formulation, intervention and evaluation and how this will impact on systemic practice in the future. This book will be of interest to trainers, students and qualified professionals in the field of mental health.