Stalking affects 7.5 million people in the United States a year, with 15 percent of women and 6 percent of men being stalked in their lifetime. Stalking entails repeat victimization because it constitutes a series of acts rather than a single incident and it can cause sustained and repeated emotional distress. This guide is a resource for prosecutors in stalking cases. It provides an overview of stalking and suggests best practices for prosecuting offenders. It should be used as a guide for attorneys to support their own research and for problem-solving in prosecuting these types of cases.