Concerns about migration and migration policy are taking on an increasingly central role in European politics. The book Crimmigration and the Return Directive, by Aniel Pahladsingh, demonstrates how the EU Return Directive grants member states the option to apply criminal sanctions in enforcing migration rules and to apply immigration detention. Through this approach, the directive provides a legal framework that is both effective and aligned with European values. The Return Directive allows member states to use criminal law in response to infractions, such as ignoring an entry ban or return order. This approach enables the effective regulation of migration flows, provided that proportionality and the fundamental rights of migrants are upheld. Pahladsingh underscores that criminal enforcement can enhance the effectiveness of migration policy, particularly in cases where other measures prove insufficient. With this book, Pahladsingh offers policymakers, judges, and advocacy organizations new pathways to explore balanced migration management. This book calls for action and provides the legal insights necessary for a future-proof and consistent European migration policy.