This chapter invites readers into the hidden world of intimate partner violence (IPV) in the lives of lesbian, gay, bisexual, trans*, and queer (LGBTQ) people. It begins by debunking common myths of LGBTQ IPV, myths that have been shaped in part by homophobia, transphobia, and a historic emphasis on heterosexual-cisgender (HC) relationships in the global IPV-prevention movement. Unfortunately, even today, these myths contribute to systemic failings in how LGBTQ IPV is addressed throughout the world. Collectively, these myths and the lack of concrete support for LGBTQ victims have rendered LGBTQ IPV largely invisible. This chapter—and, indeed, the book—contends that many answers to this problem actually already exist in research, if only they could be extracted. With this in mind, the goal of this book is to comprehensively review the past forty years of LGBTQ IPV English-language research from throughout the world—the first book to do so. Just as significantly, the book mines this literature for evidence-based tips regarding future policy, practice, and research, tips that are shared at the close of each chapter. This introductory chapter concludes with a brief guide to the upcoming chapters and the terminology used throughout the book.