Stephen Knack (1961 was a valued and cherished member of our scholarly community. Steve first attended the annual Political Economy of International Organizations (PEIO) conference in 2009 when it was hosted in Washington, DC by Georgetown University and joined the board of the Review of International Organizations in 2013, lending his considerable scholarly prestige to the journal. Steve continued to be an important member of the PEIO/RIO community, participating in myriad ways and always generous with his time and gentle with his critiques. In the review below, it should be evident how many young scholars Steve helped to launch.When news of Steve's untimely death reached the PEIO board, we knew the least we could do was to devote a special issue of RIO to papers that build on Steve's legacy. In keeping with Steve's high standards, we prioritized high-quality scholarship that makes a significant contribution to the field while building, sometimes directly and sometime indirectly, on the foundational work Steve contributed throughout his career.