This episode traces the early developments of Shi'ism. In it we discuss the original schism of authority, how the Shiatul Ali form and the compromise that is reached by the community. We talk about how the divisions between the different tribes reflect the alignments of Pre-Islamic Arabia. We explore the developing relationship of the Shia to the Caliphate and the effect the experience of Ali's death and the Battle Karbala has the early theology of Shi'ism. We trace the idea of successor and lineage in Shi'ism and how it becomes an enduring attribute of the denomination. Finally we discuss the rise of the Abbasid revolt.