There was once a trading city built beside a sea that never existed. Its walls were enormous. Its harbor was deeper than neighboring kingdoms believed. And on the highest hill above the city stood a stone watchtower. The tower did not defend the city. It had no cannons. No prison. No royal chambers. Its purpose was stranger. It watched.

There was once a locomotive works in a city that never existed. You could hear it before you could see it. Hammers. Steam. Steel wheels rolling across iron tracks. Foremen shouting from elevated platforms. Cranes swinging boiler plates through clouds of black smoke. Hundreds of men reported before sunrise.

In a kingdom that never existed, there was a road that almost nobody traveled from beginning to end. It crossed two mountain ranges. Three rivers. A forest people avoided after dark. And enough empty country to make a man question whether civilization had been a temporary experiment. The king used the road for one reason. Messages. Not ordinary messages. Orders. Contracts. Warnings. Requests from governors.