This book provides a holistic and nuanced metatheoretical perspective to working with trauma in the family system. The authors use a systemic lens, conceptualizing mental health as inextricably intertwined with the dynamics of family relationships, environment, and social context. Here, the authors explore how these interactions can both contribute to trauma and be a vital source of healing. Drawing from almost 40 years of combined clinical work, research, teaching, and theorizing, the authors synthesize key systemic principles and practices relevant to clinical practice with children, couples, and families. Therapists and trainees will find practical guidance for conceptualizing and addressing relational patterns and family system processes to promote healing after trauma. Each chapter begins with a brief illustrative vignette that sets the stage for relevant theory and research, with a focus throughout the book on practical application to real-world clinical practice. The authors emphasize the mechanisms of change underlying diverse treatment approaches, and personalizing treatment in consideration of each client or family’s culture and preferences. To enhance understanding and application of systemic concepts and strategies, they integrate a case study in detail across several chapters to show how systemic assessment, case formulation, treatment, and consultation might look in practice, inviting readers to consider how to creatively apply systemic principles and concepts in their own work. Whether you primarily interact with a single member of a family, family subgroups, an entire family, or a larger milieu, gaining a comprehensive understanding of trauma and systems can elucidate important details that deepen understanding and change your approach to trauma intervention.