... an indubitable residuum of things Persian in the Mysteries and a better knowledge of what constituted actual Mazdaism have allowed modern scholars to postulate for Roman Mithraism a continuing Iranian theology. This indeed is the main line of Mithraic scholarship, the Cumontian model which subsequent scholars accept, modify, or reject. For the transmission of Iranian doctrine from East to West, Cumont postulated a plausible, if hypothetical, intermediary: the Magusaeans of the Iranian diaspora in Anatolia. More problematic – and never properly addressed by Cumont or his successors – is how real-life Roman Mithraists subsequently maintained a quite complex and sophisticated Iranian theology behind an occidental facade. Other than the images at Dura of the two 'magi' with scrolls, there is no direct and explicit evidence for the carriers of such doctrines. ... Up to a point, Cumont’s Iranian paradigm, especially in Turcan’s modified form, is certainly plausible.