The article begins with a discussion of definitional issues regarding human trafficking and modern slavery and then briefly critiques some popular claims regarding each problem. Examples of macro-level research are critically evaluated, followed by a review of micro-level studies that illustrate tremendous variation and complexity in structural arrangements and individuals' lived experiences. These studies suggest that in this field micro-level research has at least three advantages over grand, macro-level meta-analyses-advantages that are quantitative (i.e., estimating the magnitude of the problem within a measurable universe), qualitative (i.e., documenting complexities in lived experiences), and well suited to formulating contextually appropriate policy and enforcement responses.