Inquiry-based learning is not common in secondary geography classrooms in the United States. The goal of this initial foray into design-based research was to maximize the potential of online video-case technology to disrupt this trend and support geography teachers in enacting high-quality problem-based geographic inquiry (PBGI). Informed by research on video and multimedia production for professional development, the authors worked with a team of social studies teachers in Mississippi to design PBGI curriculum materials and create a video case for use in future professional development with preservice and in-service geography teachers. This paper describes key features of the video case and presents findings on modifications to the video case that might improve its potential as a professional development tool.