The purpose of this article is to provide the research design of a meta-synthesis of qualitative case studies. The meta-synthesis aims at building theory out of primary qualitative case studies that have not been planned as part of a unified multisite effect. By drawing on an understanding of research synthesis as the interpretation of qualitative evidence from a postpositivistic perspective, this article proposes eight steps of synthesizing existing qualitative case study findings to build theory. An illustration of the application of this method in the field of dynamic capabilities is provided. After enumerating the options available to meta-synthesis researchers, the potential challenges as well as the prospects of this research design are discussed.