The head swung toward Dennis when the dragon was no more than twenty feet away. Its nostrils were set at the end of its flat muzzle. They wrinkled with the odor of the waiting youth. The eyes, gleams of black starlight, winked as they focused.
"Maybe we ought—" Dennis whispered to his companion as he edged toward the alley between this building and the next.
The dragon charged.
"Chester!" Dennis cried, flinging down his bag of provisions as he jumped between the dragon and his friend. The dragon's lower jaw dropped. Its finger-long teeth dripped ropes of digestive slime as the beast bellowed—
And collided with the invisible barrier.
Dirt sprayed. Serdic's barrier stopped nothing but the guard beasts themselves. When the dragon's head banged to an angry halt against nothing, its feet skidded in a wave of the pulverized earth of the trackway. The youth coughed and began spitting out a mouthful of the dust.
The dragon ambled away, scratching the side of its head with one of the sharp-clawed grasping arms that were normally folded alongside its chest. The creature seemed completely to have forgotten Dennis and his companion. The dragon's head and tail swung side to side, balancing the torso as the legs lifted in walking.
Chester picked up the bag of provisions. One of the sausages had spilled out. A tentacle raised it while the tip of another flicked dust precisely from the casing. "One does not learn the heart of a brave man," the robot murmured, "until his friend is attacked."
"I didn't even think of my sword," Dennis wheezed. He brushed his face with his hands but let tears and the lids clear the dust from his eyes. A sudden sneeze blew his nasal passages open and left him feeling much better, though his nose began to run.
Far on the other end of the perimeter, the second dragon bellowed in raucous triumph as it pounced on something—probably an unfortunate lizard which chose the wrong time to scuttle across the cleared strip.
The guard beasts were intended to keep the dangers of the jungle out of Emath—the tribes of scaly lizardfolk; rumored bands of human renegades, stalking the jungle trails in search of loot and always willing to pounce on an unprotected settlement; and bogeys still more frightful because no one in Emath had fully imagined them.
But the dragons were restrained rather than being controlled. They would attack anything they could get hold of, just as a pit trap would catch even the man who dug it. When the folk of Emath wanted to let traders from the jungle into their village, the wizard had to throw a separate barrier across the perimeter to prevent the guard beasts from rending the lizardfolk.
And no one from Emath could safely leave the village by land either; though that didn't matter, because nobody wanted to do that—
Until tonight.
Dennis slipped his sword a few inches up and down in its sheath, making sure that he could draw it easily. If he remembered to draw it in the next crisis, anyway.
"Are they..." Dennis said.
When Dennis paused to lick his lips, he found that they were still coated with the dirt the dragon had kicked over him. He spat with difficulty because of his dry mouth. "Will we be able to get across safely now, Chester?"
"Some men trust the moment, Dennis, and it goes well with them forever," the robot replied.
Chester still held the bag of provisions. If he was willing to do that, it would help his master run the next hundred yards.
"All right," Dennis whispered. "Let's go."
He leaped the line of grass that had survived the feet of both humans and monsters and began sprinting across the churned-up soil.
It was as difficult as running in shallow water. The soft dirt clung to his boots and spilled over their low tops. He was off-balance for running anyway, twisting his body to the left to hold his new sword and scabbard with both hands. Otherwise it would flop and trip him.
He hadn't thought of that when he took the sword.
Dennis was twenty yards out into the trackway when both the dragons sensed him. They hooted with thunderous delight. Though they were out of sight for the moment, hidden behind the curve of the buildings, Dennis could feel the ground shake as the beasts lurched from a shamble to a gallop.
Chester was hopping along beside him, suiting his pace to that of the floundering youth.
Normally Chester's tentacles glided just over the ground, curving as he stepped instead of lifting the way the jointed legs of animals would. On this surface, the robot hopped like a toad in thick dust. The strength of his silvery limbs was obviously sufficient to carry him safely clear of the dragons' rush.
When Dennis was halfway across the perimeter, he wished that he'd never started. When he was two strides further, he was sure that he was going to die.
The dragons moved in clouds of the dust their legs kicked up before them. Only their outthrust heads were visible as they strutted toward their human victim from either side.