The topic of this volume—theepistemology of group disagreement—aims to face the complex topic of group disagreement head on; it represents the first-ever volume of papers dedicated exclusively to group disagreement and to the epistemological puzzles such disagreements raise. The volume consists of 12 new essays by leading epistemologists working in the area, and it spans a range of different key themes related to group disagreement, some established themes and others entirely new. In what follows, we offer brief summaries of these 12 chapters, drawing some connections between them where appropriate.