The authors of the Manual “The Power of the Bystander: A Trainer’s Handbook for Violence Prevention” provide an excellent resource for all those who face situations of violence and want to contribute to change. Through thematically rich content and clearly structured chapters, the Manual lays the foundation for understanding, recognizing and adequately responding to violence in different contexts. The Manual “The Power of the Bystander: A Trainer’s Handbook for Violence Prevention” has a dual role. It is primarily intended for trainers of training for bystanders witnessing conflicts to enable them to move from a passive to an active role in conflict prevention. This Manual can also serve as a publication for the public at large, as it offers a professional and theoretical framework that can help in finding the right ways to respond to a potential or happening violent situation.