In the medieval Middle East, no group was as feared as the Order of the Assassins - or as misunderstood. In this episode, Olivia and Aran chart the emergence of this deadly organisation and their role in the complex web of Middle Eastern politics. This episode has everything you could want: high-octane derring-do, arcane Islamic eschatology, thundering Mongol armies and yes: even a few scheming viziers.

Come for the assassins, stay for Aran almost bursting a vessel trying to accurately explain all of early Islamic history in five minutes.