Book excerpt: This book addresses issues related with researching sensitive topics in social work, focusing on marginalized, vulnerable and hard to reach people. It covers the definition, characteristics, challenges and opportunities of sensitive research, its philosophical roots and methodological debates, and the skills and values that are required along with the ethical, political and legal issues involved in conducting social work research. This book will cover innovative research methods appropriate for research on sensitive topics involving vulnerable people. It shines light on how to use traditional research methods sensitively, and how to generate data while minimizing the harm that can potentially be caused to research participants and researchers.