This book remains a seminal text in supervision. In the fourth edition the authors bring a contemporary perspective to bear on supervision with an emphasis on the wider contextual and cultural contexts of our work as supervisors. I appreciate above all the 'fearless compassion' with which the authors have addressed the challenges that face us as supervisors in a global culture, and at the same time their ongoing stress on integrating the 'emotional and the rational, the personal and the organizational' in a very accessible model of supervision." Professor Maria Gilbert, Metanoia Institute, West London