4th book in the WMD Files sub-series.
"Don Riley of the U.S. Cyber Command is given charge of a brand new effort: a new team in the CIA Operations Directorate called Emerging Threats. The group is going under the name of the Mahdi, a messiah figure of Islamic mythology, and is operating in the geopolitical tinderbox that is the Nile River basin. But the Mahdi is no ordinary terrorist group. Their stock in trade is not the usual suicide bombings and surprise attacks. In fact, the Mahdi has created and is about to release the worst kind of weapon: a hugely destructive bioweapon, known as Pandora, with a devastating fatality rate."