Rage and wild desperation began to fill Sheeana. Mindlessly, she raced down the dune toward Shaitan, coming up behind the worm as it turned back through the dry place where it had entered the village. Without thought, she dashed along beside the tail, scrambled onto it and ran forward along the great ridged back. At the hump behind its mouth, she crouched and beat her fists against the unyielding surface.

The worm stopped.

Her anger suddenly converted to terror, Sheeana broke off pounding on the worm. She realized only then that she had been screaming. A terrible sense of lonely exposure filled her. She did not know how she had come here. She knew only where she was and this gripped her with an agony of fear.

The worm continued quiescent on the sand.

Sheeana did not know what to do. At any moment, the worm could roll over and crush her. Or it could burrow beneath the sand, leaving her on the surface to be scooped up at leisure.

Abruptly, a long tremor worked its way down the worm's length from its tail to Sheeana's position behind the mouth. The worm began to move ahead. It turned in a wide arc and gathered speed on a course to the northeast.

Sheeana leaned forward and gripped the leading edge of a ring ridge on the worm's back. She feared that any second it would slide beneath the sand. What could she do then? But Shaitan did not burrow. As minutes passed without any deviation from that straight and swift passage across the dunes, Sheeana found her mind working once more. She knew about this ride. The priests of the Divided God forbade it but the histories, both written and oral, said Fremen rode thus in the ancient days. Fremen stood tall atop Shaitan's back supported by slender poles with hooked ends. The priests decreed that this had been done before Leto II shared His consciousness with the God of the desert. Now, nothing was permitted that might demean the scattered bits of Leto II.

With a speed that astonished her, the worm carried Sheeana toward the mist-dazzled shape of Keen. The great city lay like a mirage on the distorted horizon. Sheeana's threadbare robe whipped against the thin surface of her patched stillsuit. Her fingers ached where she gripped the leading edge of the giant ring. The cinnamon, burnt-rock and ozone of the worm's heat exchange swept over her on shifts in the wind.

Keen began to gain definition ahead of her.

The priests will see me and be angry, she thought.

She identified the low brick structures that marked the first line of qanats and, beyond them, the enclosed barrel-curve of a surface aqueduct. Above these structures rose the walls of terraced gardens and the high profiles of giant windtraps, then the temple complex within its own water barriers.

A day's march across open sand in little more than an hour!

Her parents and village neighbors had made this journey many times for trade and to join in the dancing but Sheeana had only accompanied them twice. She remembered mostly the dancing and the violence that followed. The size of Keen filled her with awe. So many buildings! So many people! Shaitan could not harm such a place as that.

But the worm plunged straight ahead as though it would ride over qanat and aqueduct. Sheeana stared at the city rising higher and higher in front of her. Fascination subdued her terror. Shaitan was not going to stop!

The worm ground to a halt.

The tubular surface vents of the qanat lay no more than fifty meters in front of its gaping mouth. She smelled the hot cinnamon exhalations, heard the deep rumblings of Shaitan's interior furnace.

It became apparent to her at last that the journey had ended. Slowly, Sheeana released her grip on the ring. She stood, expecting any moment the worm would renew its motion. Shaitan remained quiescent. Moving cautiously, she slid off her perch and dropped to the sand. She paused there. Would it move now? She held a vague idea of dashing for the qanat but this worm fascinated her. Slipping and sliding in the disturbed sand, Sheeana moved around to the front of the worm and stared into the fearsome mouth. Within the frame of crystal teeth flames rolled forward and backward. A searing exhalation of spice odors swept over her.

The madness of that first dash down off the dune and onto the worm came back to Sheeana. "Damn you, Shaitan!" she shouted, shaking a fist at the awful mouth. "What did we ever do to you?"

These were words she had heard her mother use at the destruction of a tuber garden. No part of Sheeana's awareness had ever questioned that name, Shaitan, nor her mother's fury. She was of the poorest dregs at the bottom of the Rakian heap and she knew it. Her people believed in Shaitan first and Shai-hulud second. Worms were worms and often much worse. There was no justice on the open sand. Only danger lurked there. Poverty and fear of priests might drive her people onto the perilous dunes but they moved even then with the same angry persistence that had driven the Fremen.

This time, however, Shaitan had won.

It entered Sheeana's awareness that she stood in the deadly path. Her thoughts, not yet fully formed, recognized only that she had done a crazy thing. Much later, as the Sisterhood's teachings rounded her consciousness, she would realize that she had been overcome by the terror of loneliness. She had wanted Shaitan to take her into the company of her dead.

A grating sound issued from beneath the worm.

Sheeana stifled a scream.

Slowly at first, then faster, the worm backed off several meters. It turned there and gathered speed beside the twin-mounded track it had created coming from the desert. The grating of its passage diminished in the distance. Sheeana grew aware of another sound. She lifted her gaze to the sky. The thwock-thwock of a priestly ornithopter swept over her, brushing her with its shadow. The craft glistened in the morning sunlight as it followed the worm into the desert.

Sheeana felt a more familiar fear then.

The priests!

She kept her gaze on the 'thopter. It hovered in the distance, then returned to settle gently onto a patch of worm-smoothed sand nearby. She could smell the lubricants and the sickly acridity of the 'thopter's fuel. The thing was a giant insect nestled on the sand, waiting to pounce upon her.

A hatch popped open.

Sheeana threw back her shoulders and stood her ground. Very well; they had caught her. She knew what to expect now. Nothing could be gained by flight. Only the priests used 'thopters. They could go anywhere and see anything.

Two richly robed priests, their garments all gold and white with purple trim, emerged and ran toward her across the sand. They knelt in front of Sheeana so close she could smell their perspiration and the musky melange incense which permeated their clothing. They were young but much like all the priests she could remember: soft of features, uncalloused hands, careless of their moisture losses. Neither of them wore a stillsuit under those robes.

The one on her left, his eyes on a level with Sheeana's, spoke.

"Child of Shai-hulud, we saw your Father bring you from His lands."

The words made no sense to Sheeana. Priests were men to be feared. Her parents and all the adults she had ever known had impressed this upon her by words and actions. Priests possessed ornithopters. Priests fed you to Shaitan for the slightest infraction or for no infraction at all, for only priestly whims. Her people knew many instances.

Sheeana backed away from the kneeling men and cast her glance around. Where could she run?

The one who had spoken raised an imploring hand. "Stay with us."

"You're bad!" Sheeana's voice cracked with emotion.

Both priests fell prostrate on the sand.

Far away on the city's towers, sunlight flashed off lenses. Sheeana saw them. She knew about such flashings. Priests were always watching you in the cities. When you saw the lenses flash that was the signal to be inconspicuous, to "be good."