Our key study question is whether an integrated focus on PG and PTSD (Seeking Safety; SS) offers a useful new option for clinical care compared to a purely problem gambling approach (Cognitive-Behavioral Therapy for PG; CBT-PG). This question—the impact of integrated versus non-integrated treatment for co-occurring disorders—is one of the key issues in the field currently and has never been studied in relation to PG and PTSD.