The Shadow of God and the Hidden Imam: Religion, Political Order, and Societal Change in Shi'ite Iran from the Beginning to 1890 by Said Amir Arjomand
Dismissing oversimplified and politically-charged views of the politics of Shi'ite Islam, Said Amir Arjomand offers a richly researched sociological and historical study of Shi'ism and the political order of premodern Iran that exposes the roots of what became Khomeini's theocracy.