To date, no inpatient evidence-based psychotherapeutic interventions have been developed for suicidal individuals with psychological trauma. Therefore, we have adapted, refined, implemented, and pilot-tested an inpatient-based cognitive behavioral therapy protocol, named Post-Admission Cognitive Therapy (PACT), for the prevention of suicide. This article briefly describes the theoretical and research underpinnings for PACT, components of the treatment protocol, and clinical challenges. A case study of a traumatized military service member hospitalized following a suicide attempt is presented. Baseline and follow-up assessment data show general improvements in suicide ideation, depression, hopelessness, and Post Traumatic Stress Disorder symptomatology over time. While the data for the presented case appears promising, the efficacy of PACT remains unknown and is currently under investigation in a randomized controlled trial. Recommendations for clinicians and students who deliver care to suicidal psychiatric inpatients are provided.