This training manual for law enforcement officers, Trafficking in Persons: Effective First Response and Proactive and Reactive Investigation of Trafficking, was developed and launched by IOM Ghana, in collaboration with the Ghana Police Service and with financial support from the Office to Monitor and Combat Trafficking in Persons of the United States Department of State. The manual aims to build the capacity of law enforcement officers to proactively identify and investigate trafficking cases, help prevent trafficking in persons, and protect victims of trafficking.