Ghostwater (Cradle, #5)

by Will Wight

“I poured years of effort into this world and its research,” he went on, undisturbed by their jog down the hall. “None of them delivered what I wanted: a mind, subordinate to my own, that could manage a small portion of my powers. The messengers of the heavens use such constructs, so perhaps they can only be created beyond this one small world. But I still left behind the greatest mind a man could create.”