The excerpt below is from Leviathan but does not include illustrations, to view the first three chapters including illustrations visit the publisher's website.

One

The Austrian horses glinted in the moonlight, their riders standing tall in the saddle, swords raised. Behind them two ranks of diesel-powered walking machines stood ready to fire, cannon aimed over the heads of the cavalry. A zeppelin scouted no-man's-land at the center of the battlefield, its metal skin sparkling.

The French and British infantry crouched behind their fortifications -- a letter opener, an ink jar, and a line of fountain pens -- knowing they stood no chance against the might of the Austro-Hungarian Empire. But a row of Darwinist monsters loomed behind them, ready to devour any who dared retreat.

The attack had almost begun when Prince Aleksandar thought he heard someone outside his door....

He took a guilty step toward his bed -- then froze in place, listening hard. Trees stirred in a soft breeze outside, but otherwise the night was silent. Mother and Father were in Sarajevo, after all. The servants wouldn't dare disturb his sleep.

Alek turned back to his desk and began to move the cavalry forward, grinning as the battle neared its climax. The Austrian walkers had completed their bombardment, and it was time for the tin horses to finish off the woefully outnumbered French. It had taken all night to set up the attack, using an imperial tactics manual borrowed from Father's study.

It seemed only fair that Alek have some fun while his parents were off watching military maneuvers. He'd begged to be taken along, to see the mustered ranks of soldiers striding past in real life, to feel the rumble of massed fighting machines through the soles of his boots.

It was Mother, of course, who had forbidden it -- his studies were more important than "parades," as she called them. She didn't understand that military exercises had more to teach him than musty old tutors and their books. One day soon Alek might be piloting one of those machines.

War was coming, after all. Everyone said so.

The last tin cavalry unit had just crashed into the French lines when the soft sound came from the hallway again: jingling, like a ring of keys.

Alek turned, peering at the gap beneath his bed chamber's double doors. Shadows shifted along the sliver of moonlight, and he heard the hiss of whispers.

Someone was right outside.

Silent in bare feet, he swiftly crossed the cold marble floor, sliding into bed just as the door creaked open. Alek narrowed his eyes to a slit, wondering which of the servants was checking on him.

Moonlight spilled into the room, making the tin soldiers on his desk glitter. Someone slipped inside, graceful and dead silent. The figure paused, staring at Alek for a moment, then crept toward his dresser. Alek heard the wooden rasp of a drawer sliding open.

His heart raced. None of the servants would dare steal from him!

But what if the intruder were something worse than a thief? His father's warnings echoed in his ears....

You have had enemies from the day you were born.

A bell cord hung next to his bed, but his parents' rooms were empty. With Father and his bodyguard in Sarajevo, the closest sentries were quartered at the other end of the trophy hall, fifty meters away.

Alek slid one hand under his pillow, until his fingers touched the cold steel of his hunting knife. He lay there holding his breath, grasping the handle tightly, repeating to himself his father's other watchword.

Surprise is more valuable than strength.

Another figure came through the door then, boots clomping, a piloting jacket's metal clips jingling like keys on a ring. The figure tromped straight toward his bed.

Excerpted from Leviathan by Scott Westerfield. Copyright © 2009 by Scott Westerfield. Excerpted by permission of Simon Pulse. All rights reserved. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher.