One of the fundamental properties of human language is movement, where a constituent moves from one position in a sentence to another position. Syntactic theory has long been concerned with properties of movement, including locality restrictions. Smuggling in Syntax investigates how different movement operations interact with one another, focusing on the special case of smuggling. First introduced by volume editor Chris Collins in 2005, the term 'smuggling' refers to a specific type of movement interaction. The contributions in this volume each describe different areas where smuggling derivations play a role, including passives, causatives, adverb placement, the dative alternation, the placement of measure phrases, wh-in-situ, and word order in ergative languages. The volume also addresses issues like the freezing constraint on movement and the acquisition of smuggling derivations by children. In this work, Adriana Belletti and Chris Collins bring together leading syntacticians to present a range of contributions on different aspects of smuggling. Tackling fundamental theoretical questions with empirical consequences, this volume explores one of the least understood types of movement and points the way toward new research.