Steal this idea - "Meccamania"

This article about the pilgrimage to Mecca got me thinking. What if...

A para-military group made up of a group of people bent on personal revenge and financial banking acquires a nuclear weapon and targets the time of pilgrimage to deliver "their final solution." Someone in the group balks at the thought of this horrendous act, but before she can get the attention of help, she is liquidated. Her death, though, captures the interest of a former Muslim friend, and minor police official, and he starts to investigate. Soon, he realizes the exact nature of the threat, but is rebuffed by his superiors who consider him lower class. He reluctantly turns to MI7 for help and is reeled into the world of secrets, agents, connections to the Massad (sp) and the CIA that can be used for good and for evil in a desperate attempt to stop the para-military group. And he only has a week to gain this trust and stop the slaughter of millions.