This chapter provides an overview of the main vulnerabilities and risks faced by migrants assisted in the IOM transit centres in the Niger en route back to their countries of origin, and of changes to such risks observed over the past three years. These are also presented through migrants’ personal stories. The clear pattern that emerges is an overrepresentation of certain nationalities and demographics among unaccompanied migrant children and victims of trafficking. The chapter recommends the utilization of an evidencebased approach in aligning programming with the main patterns observed among migrants in vulnerable situations, particularly victims of trafficking.