The Centrum ’45 foundation has developed a multimodal group treatment for traumatised police officers who insufficiently benefit from brief trauma-focused therapy. This one-day clinic is based on the model of negative resilience. This model posits that police officers are liable to developing posttraumatic stress, when they respond to serious or multiple traumatic events with structural denial or dissociative coping. Besides trauma-processing, the treatment aims at restoring resilience through sociotherapeutic and psychomotor interventions. From 2009 through 2014, 46 patients participated in the nine-month treatment. Routine outcome monitoring was administered before, during, and after treatment. After treatment around 70 % of the participants reported improvement of (12.5 %) or recovery from (59 %) PTSD symptoms (as measured by the Harvard Trauma Questionnaire). Around 75 % of the participants reported improvement of (26.5 %) or recovery from (50 %) comorbid psychological complaints (as measured by the Brief Symptom Inventory).