INTRODUCTION The holy city of Mecca looked deceptively calm as the first dawn of the new century started to break behind craggy mountains. Splashing his face with cold water, the Grand Mosque''s bearded imam fastened a beige-hued cloak over his shoulders and muttered praises to the Lord. The time to lead the morning''s first prayer was minutes away. Under his window, the mosque''s floodlit courtyard was filling up quickly. The hajj pilgrimage season, when this stadium-size enclosure was traversed by more than a million worshippers, had already ended. Yet Mecca remained jam-packed with the faithful. Many of them had spent the night inside Islam''s holiest shrine, curling up on wool carpets in the Grand Mosque''s multistory labyrinth of nearly a thousand rooms. As usual, these worshippers camped along with their bundles, mattresses, and suitcases that nobody had bothered to check.

Following custom, many hauled in wooden coffins, hoping that the imam would bestow on decomposing relatives inside the precious blessings that can only be received in such a sacred precinct. Today, some of these coffins contained an unusual cargo: Kalashnikov assault rifles, Belgian-made FN-FAL guns, bullet belts, and an assortment of pistols. The men who had smuggled this arsenal into the mosque sought an ambitious goal: to reverse the flow of world history, sparking a global war that would finally lead to Islam''s total victory and to a destruction of arrogant Christians and Jews. The date was the First of Muharram of Islam''s year 1400-which in calendars kept by infidel Westerners corresponded to November 20, 1979. For the natives of Mecca, a city that lives off the flood of humanity that has coursed through its shrines since time immemorial, this Tuesday morning promised a particularly joyful occasion: New Year''s day is when, according to tradition, the Meccans make a pilgrimage of their own to the Grand Mosque. In darkness, thousands trekked to the outskirts of the city, shedding everyday clothes after a shower and returning in the pilgrims'' snow white ihram outfits-two towel-like garments that symbolize purity and leave men''s right shoulders exposed. Mixing in with the locals were as many as 100,000 visitors from all over the world-Pakistanis and Indonesians, Moroccans and Yemenis, Nigerians and Turks. Some were stragglers left behind after the hajj, entrepreneurial pilgrims who, year after year, try to offset the cost of their passage by reselling in Mecca''s bazaars exotic wares from their remote homelands.

Others had arrived in Mecca just to witness the turn of the century-a once-in-a-lifetime event. Hidden in this human sea were hundreds of grim-faced rebels, many of them sporting red checkered headdresses. Some had been inside the mosque for days, reconnoitering its maze of corridors and passageways. Others were bused in during the night by a friendly religious academy. Yet others drove their own cars to Mecca this morning, arriving at the last minute and accompanied by children and wives to allay guards'' suspicions. Most of these conspirators were Saudis of Bedouin stock, though their ranks also brimmed with foreigners, if such a word had a meaning for men who believed in the single citizenship of Islam. They even included African American converts, inspired by a new faith and hardened by race riots half a world away. The color of the cloudless sky just started to turn from grayish to pink when the dawn ritual began, as it does that time of the year, at 5:18 a.

m. "La ilaha ila Allah," the deep-voiced prayer call rang from new loudspeakers affixed atop the mosque''s seven towering minarets: "There is no god but Allah." Barefoot, worshippers knelt in the Grand Mosque''s marble-paved courtyard. Clearing his throat, the imam picked up the microphone and read out the blessings. On his cue, the faithful prostrated themselves on the ground, in a vast succession of concentric circles that radiated from the Kaaba, an ancient cube draped in black silk embroidered with gold that looms in the center of the enclosure. Then, just as the imam concluded the prayer with wishes of peace, gunshots rang out. The crackling sound reverberated in the courtyard as in an echo chamber. Stunned worshippers spotted a young man, a rifle in his hands, walking briskly toward the Kaaba.

Another shot sent into the air flocks of panicked pigeons that usually graze on the plaza outside the Grand Mosque. Rumors quickly swirled through the crowd. What could all this be? What was all that noise? Maybe there is an innocuous explanation, one man opined. Maybe the gunmen were bodyguards for some senior prince, or even the Saudi monarch, King Khaled, himself ? Maybe the gunfire was just some peculiar Saudi way to celebrate the New Year? More knowledgeable worshippers shuddered. Firing a weapon in the Grand Mosque, they knew, was a grave sin. They couldn''t recall the last time such a sacrilege had occurred. Pilgrims watched with angst as more and more gunmen closed in on the Kaaba, carrying weapons that had been extracted from uncrated coffins. The Grand Mosque''s own police force, armed with nothing more threatening than sticks for beating misbehaving foreign pilgrims, melted away once two guards who attempted resistance fell dead by the gates.

Amid this commotion, the rebels'' leader, Juhayman al Uteybi, emerged from the depths of the mosque. A forty-three-year-old Bedouin preacher with magnetic black eyes, sensual lips, and shoulder-length hair that seamlessly blended into a black curly beard, Juhayman conveyed a sense of immediate authority despite his slender stature. Emulating a piety first displayed by Prophet Mohammed himself, he wore a traditional Saudi white robe that was cut short at midcalf to signal the rejection of material goods. Unlike his fellow gunmen, he was bareheaded, with only a thin green hair band keeping his unruly locks in check. Flanked by three militants armed with rifles, pistols, and daggers, Juhayman started to elbow his way across the courtyard, toward the sacred Kaaba and the Grand Mosque''s imam. The cleric, who had just turned his face away from the Kaaba and toward the distressing tumult among the believers, noticed that he was standing right next to a coffin. This one contained a real cadaver; the dead child''s relatives, oblivious to the mounting upheaval, were imploring the imam to bless the tiny corpse. As the cleric obliged, reciting the sacred lines, recognition flickered on his face.

He realized in these moments that Juhayman and some of the other gunmen, who now got disconcertingly close, had attended his lectures on Islam here in Mecca. This feeling turned to horror seconds later, as Juhayman unceremoniously pushed the cleric aside and seized the microphone. When the imam tried to wrestle back the mike, one of the intruders raised a sharp curved dagger and screamed at the top of his lungs, ready to stab. A fright swept the crowd. Picking up shoes, thousands rushed toward the enclosure''s gates, only to find all fifty-one of them chained shut. Ragged-looking gun- men, muzzles staring into the crowd, barred all exits. Unsure of how to behave, some worshippers started chanting "Allahu Akbar"- "God is Greatest"-the Muslims'' invocation of faith in a moment of adversity. The gunmen unexpectedly joined in this chorus and it became louder and louder, spreading throughout the packed mosque until it turned into a deafening roar.

When this chanting subsided, Juhayman barked into the microphone a series of clipped military commands. Following his instructions, scores of his well-trained followers dispersed throughout the compound, setting up machine-gun nests atop the shrine''s seven minarets. Trapped pilgrims were gang-pressed into aiding the rebels. Some had to roll up the thousands of heavy carpets inside the courtyard and prop them up against the chained gates. The fittest were forced at gunpoint to climb the steep staircases to the tops of the minarets, carrying water and crates of ammunition. The takeover of Islam''s holy of holies was swift and complete. At their 89 meters (292 feet) of height, the mosque''s minarets overlooked much of downtown Mecca, providing rebel snipers with a vast field of fire. Trigger fingers caressing the cold metal, they scanned neighboring streets for potential foes.

"If you see a government soldier who wants to raise his hand against you, have no pity and shoot him because he wants to kill you," Juhayman instructed these snipers in his guttural desert accent. "Do not hesitate!" Under the minarets, even Saudis-proficient in the local dialect-had a hard time understanding what was going on. The crying of women, the coughing of elders, and the shuffling of bare feet filled the Grand Mosque''s courtyard with an anxious hum. Many foreigners among the tens of thousands of hostages spoke no Arabic at all and stood transfixed in the turmoil, asking better-educated countrymen for explanation in a multitude of tongues. The conspirators were prepared for linguistic problems, and wanted to be comprehended. Soon they grouped Pakistani and Indian pilgrims on one side of the mosque, with a Pakistani-born rebel interpreting the announcements in Urdu to bewildered compatriots. A cluster of Africans was provided with a speaker of English. "Sit down, sit down and listen," Juhayman''s gunmen yelled, rifle-butting those pilgrims who dared to disobey.

As cowed worshippers finally settled in fearful attention, the mysterious group indicated that its authority now extended well beyond the Grand.