The title led me to expect a somewhat different kind of book. What we are offered is not so much a dossier on Iconoclasm, like André Grabar's, as a dossier on the Dark Age of Byzantium. It falls into two parts: the first and more original is devoted to material culture, while the second is a checklist of written sources, largely overlapping the Prolegomena volume of PmbZ. Aimed at university students, this is essentially a work of reference. A further volume of synthesis is promised.