How can we analyse––and subsequently counter––the Islamic State in Iraq and Syria (ISIS) movement if we do not pay close attention to the narratives it uses to designate its cause, strategy and struggles? In The ISIS reader, Haroro J. Ingram, Craig Whiteside and Charlie Winter––three prominent scholars in the field of ISIS propaganda analysis––unpack the narratives proposed by the terrorist organization. They have done so by gathering an ensemble of foundational texts delivered, produced, transmitted––and often translated into multiple languages––by the movement itself. This essential contribution to the literature on the Islamic State offers fascinating insights by putting the group's narratives in context in terms of chronology (the evolutions of the group's concerns and priorities); but also in relation to other, competing ideologies (including some of the inspirations taken from Al-Qaeda's foundational texts, such as Abu Bakr Naji's Management of savagery); and at the organizational, logistical level (including by deciphering the organization of the media department, and how the group copes, internally, with military difficulties).