BACKGROUND: Emotional Freedom Techniques (EFT) and Eye Movement Desensitization and Reprocessing (EMDR) have been empirically validated as effective psychotherapeutic interventions for treating Post Traumatic Stress Disorder (PTSD). This single subject design case study is of a survivor of the Twin Towers collapse who was treated for prolonged PTSD complicated by dissociated memories. OBJECTIVE: EMDR and EFT's effectiveness in treating PTSD were evaluated. METHOD: Multiple assessments using Trauma Symptom Inventory (TSI) and Personality combination with EMDR were conducted. RESULTS: Effects of a single session of EFT assessed immediately after treatment demonstrated an elimination of clinically significant scores on both the TSI and PAI. The participant concluded treatment with nearly complete symptom remediation and a return to work. CONCLUSION: The combination of treatment methods appears to be highly effective and allowed this subject to return to work after many years of disability.