This book presents a compelling orientation to the importance of engaging bystanders in sexual violence prevention. The narrative provides background on the development of an approach that empowers each of us to be involved in prevention. It discusses various reasons why individuals who witness a range of inappropriate behaviors may or may not take action, and presents ways to encourage and develop greater bystander involvement. Finally, this book serves as an excellent training resource; it provides activities and trainer instructions throughout that make it a useful educational guide on bystander engagement in sexual violence prevention. Available in English and Spanish.