This book takes a mixed methods approach to examining the diffusion of human trafficking laws in Eurasia through a gendered lens. It weaves both qualitative and quantitative methods into different chapters to uncover whether the variations in Eurasia concerning human trafficking policy adoption are due to internal determinants and/or from external pressure. The book consists of a comparative case study analysis with fieldwork in Russia, Latvia, and Ukraine using process tracing, participant observation, interviews, and items gathered in the field such as policy documents and archival data to determine adoption and implementation. The book chapters are comprised of a qualitative and quantitative content analysis of human trafficking policies in Eurasia, different quantitative approaches to network analysis, and statistical models on the whole region for policy adoption and implementation. This methodological appendix was inspired by Christine Cheng's research design scaffolding, peeling back her research approach by discussing the research process and how an idea for a dissertation transformed into a published book (Cheng, 2018). I reveal the reason for my choice of cases, the different impediments I faced during my fieldwork, and the ethics involved in conducting my research. I then examine more concretely my research process and the different methodological approaches, including: interviews, participant observation, archival research, content analysis, network analysis, and a statistical analysis. I uncover the technical and methodological facets to the qualitative and quantitative methods used in this book and the reasoning behind my choices of variables, sampling methods, and data compilation.