The book is written in a conversational mode and is designed to be easy for students in supervision courses and for new and experienced supervisors. Along with numerous examples from “real life” supervision and a thorough explication of a work-phase model of supervision, the new edition includes: 1. In-depth discussion and illustrations of the practice content of supervision, 2. Supervision of evidence-based practices, 3. Ethical issues, changing legislation, and risk assessment strategies, 4. Group leadership, group supervision, and the impact of traumatic events, i.e., 9/11.