This book, which operationalizes and articulates in detail a unique, brief, tested psychodynamic psychotherapy for Post-Traumatic Stress Disorder, Trauma Focused Psychodynamic Psychotherapy [TFPP], describes how to perform this helpful treatment. The book provides tailored psychodynamic background that underpins these approaches, and explains the different phases of treatment. Additionally, it articulates common underlying dynamics of PTSD that the treatment commonly addresses in patients to bring about symptomatic relief. TFPP is being tested in two diverse populations: military Veterans with PTSD who are receiving care at three Veterans Administration Hospitals, and also among LGBTQ patients with PTSD. The book is focused on the authors’ experiences treating Veterans and many clinical examples are provided demonstrating how to work with these principles and approaches. In general, patients and therapists have found the treatment to be an extremely useful tool. Veterans have gained insight into the impact of traumatic experiences on various aspects of their lives and had improvements in dissociation, interpersonal engagement, anxiety, and anger/hostility. TFPP appears to be particularly effective for patients with prominent avoidance symptoms and those who are unwilling or unable to recount the details of their trauma directly. Patients have been found to be more affectively engaged and better connected to others (including the therapist) following treatment.