This book examines the concept of Purgatory. However, in contradistinction to the many monographs and edited volumes published in the past 50 years devoted to historical, cultural, or theological treatments of Purgatory—especially in proportion to the voluminous output on Heaven and Hell—this collection features papers by philosophers and other scholars engaged specifically in philosophical argument, debate, and dialogue involving conceptions of Purgatory and related ideas. It exists to broaden the discussion beyond the prevailing trends in the academic literature and fills an important intellectual gap.