Filling a key need, this unique handbook reviews the state of the science of group-based treatment of posttraumatic stress disorder (PTSD) and other trauma-related problems and offers detailed descriptions of specific approaches. Leading clinician-researchers present their respective therapies step by step, including “mini-manuals” with extensive case examples. The volume provides practical guidance about basic skills for leading groups for trauma survivors, ways of comparing different kinds of groups, and the place of group therapy in the overall arc of trauma treatment. Special topics include training, supervision, and evaluation of trauma therapy groups and conducting virtual/telehealth groups.