As a dynasty based in medieval North Africa and southern Spain, the Almohads have received relatively little attention from Anglophone scholars in Islamic Studies, many of whom work from a Middle Eastern perspective. Allen Fromherz’s book is thus a very welcome contribution to the field. His over-arching aim is to present an account of the rise of the Almohads by looking at the Almohad movement’s leader, Muḥammad b. Tūmart; the Maṣmūda Berber tribal environment in which the empire arose; and the doctrines by which Ibn Tūmart galvanised these tribes from the High Atlas mountains of Morocco.