The essays in this volume, presented on the occasion of Brian Armstrong's retirement, explore the various paths of the Reformed tradition throughout Europe. In contrast to the older scholarship that viewed Geneva as the normative model of the Reformed Church and negatively assessed any departures from that model as ‘fragmentation’, this collection regards such theological and ecclesiological adaptations as positive developments that allowed the Reformed movement to be rooted and grow in a variety of political and cultural contexts. The thirteen essays are divided into four groups: ‘Calvin, Beza and Geneva’; ‘Reformed ideas outside Geneva’; ‘The Reformation in France’; and ‘The Reformations in England and Scotland’. The scope of the book is admittedly not comprehensive. For example, there is no discussion of the Reformed movement in central and eastern Europe, and little attention is given to the Dutch Reformed Church. The intended audience of the book includes both experts in the field and non-specialists. This is meant to justify the use of ‘Calvinism’ in the book's title, despite the problems associated with this term (pp. 1–2). It is still odd, however, for the editor to speak anachronistically of how Bucer adapted ‘Calvinism’ in France (p. 2). As with any collection of essays, some contributions are stronger than others. In light of the book's putative unifying theme, it is puzzling how some essays, although informative in their own right, properly fit in this volume or in the particular part to which they are assigned. On the other hand, the contributions of Mentzer and Kingdon are especially good examples that examine the continuities and discontinuities between Geneva and other francophone Churches.