Victims of human trafficking play a key role in the investigation and prosecution of traffickers; however, their involvement in the interview process and the information they disclose largely depend on the quality of their interactions with interviewers. Victims of trafficking represent a challenging and complex subset of victims. Unfortunately, little is known about the effectiveness of interviewing strategies specifically with trafficking victims. Law enforcement agencies have limited evidence-based or actionable guidance to strengthen interviewing practices with this subset of victims. In addition to systematically identifying and describing the available literature on interviewing potential human trafficking victims in a law enforcement context, this report discusses interviewing practices and recommendations stemming from the literature, research gaps and future research directions.