Book reviewers confront a challenging task. How does one capture the essence and the contours of a book? How does one formulate both affirmations and critiques? The task is even greater when a reviewer is asked to write about a book that is not a monograph but a handbook, encyclopedia, or edited book of chapters by different authors. We want to thank Nathan Carlin, Alvin Dueck, Austin Johnson, and Ines Jindra and praise their courage for writing essay reviews of a handbook with 32 complex and diverse chapters. Each chapter is written from the point of view of a particular discipline and/or religion. Each reviewer, in his or her own way, engages the Oxford Handbook of Religious Conversion with extensive knowledge, generosity of spirit, and a critical perspective that not only evaluates this book but also enhances and enriches the field of conversion studies. Although some dispute the assertion that there even is a Bfield^of conversion studies, Farhadian and I, along with the authors of the Handbook's chapters, consider the dynamics of conversion to be worthy of attention. Each of the authors has made an important contribution to the study of the dynamics and contours of the nature of religious change that is often labeled Bconversion. s many of the contributors to the Handbook note, there is no clear consensus on a definition of conversion. Indeed, we (Farhadian and Rambo) argue that there are two major ways of looking at definitions of conversion: normative and descriptive. Normative definitions are derived from within particular religious groups or movements that provide characteristics of and/or requirements for a Bgood^or Bauthentic^conversion. In some groups, this means having orthodox (as specified by a particular group) beliefs, practices, ethical standards, etc. In my (Rambo's) book Understanding Religious Conversion, I rather provocatively said: BConversion is what a group or person says it is^(1993, p. 7). It is important to note that various religions (and subgroups within a particular religion) have specific requirements and