As the conspirators and their train, following the Khorasan Highway, closed in on the foothills of the Zagros, they would have felt the violent heat of summer on the plains starting to diminish. Autumn was on its way. Soon, the king would be descending from the mountains. If the assassination squad could ambush him on open ground, somewhere on the road between Ecbatana and the heartland of royal power in Persia, then he might be dispatched with relative ease.
