Ibn Babawayh - also known as al-Shaykh al-Saduq - was a prominent Twelver Shi'i scholar of<i> hadith</i>. Writing within the first century after the vanishing of the twelfth imam al-Saduq represents a pivotal moment in Twelver h<i>adith </i>literature as this Shi'i community adjusted to a world without a visible imam and guide a world wherein the imams could only be accessed through the text of their remembered words and deeds. George Warner's study of al-Saduq's work examines the formation of Shi'i <i>hadith</i> literature in light of these unique dynamics as well as giving a portrait of an important but little-studied early Twelver thinker. Though almost all of al-Saduq's writings are collections of h<i>adith</i> Warner's approach pays careful attention to how these texts are selected and presented to explore what they can reveal about their compiler offering insight into al-Saduq's ideas and suggesting new possibilities for the wider study of h<i>adith</i>.