This book presents examples of treatment cases that depict the effective involvement of co-therapists and brief interventions of consultants in challenging treatment cases and the manner in which they facilitate expediting treatment and extricating therapists from treatment impasses. Part one describes the dialectical cotherapy approach in treating individuals, families and groups and in supervising and teaching trainees treatment selection. Part two describes the effective brief interventions of consultants in treatment impasses. Thirteen brief case studies (plus a group therapy) are presented of children and adults with various symptoms, problems and diagnoses, including , amongst others, selective mutism, borderline personality, phobia, OCD, depression, and anorexia nervosa. Seymour Hoffman, Ph. D. is a senior clinical psychologist who has worked in various psychiatric hospitals, mental health clinics and a university student counselling service in the last 50 years in the United states and Israel. He is presently employed as a supervising clinical psychologist in a mental health clinic in Israel and is in private practice. He has published over 50 papers in professional journals in the U.S., UK, and Israel and co-authored two books and edited one on psychotherapy. He is listed in Marquis Who's Who in Medicine and Healthcare.