It shambled down to the riverbank and began plodding upstream toward the magic’s source. It advanced steadily for the better part of an hour, a bulky, almost featureless form passing through a mix of sunlight and shadows, a monster set loose. It was neither fast nor supple, but steady and dogged. Once it began a search, it would not quit. That was its value. The old man in the gray cloak and slouch hat relied on it to do what no other demon could—to track a scent from a scrap of cloth or a single footprint or even a momentary vision. A peculiar mix of bloodlust and hunger drove it, guided it, and infused it with purpose. The Klee was a special breed of demon, one that came along only now and then. Its makeup was unusual enough that a demon less astute than the old man might not recognize its talent. Repulsive and terrifying, a monster in both appearance and behavior, it did not invite close examination. To make any use of it, you had to be able to embrace an unspeakable evil, and the old man had. The Klee didn’t care what others thought of it. It only cared that its urges and needs were given an outlet. On this occasion, the old man had given it what it craved most—an uncomplicated directive to kill everything it encountered. The Klee did not understand the reasons for this or even care to discover them. It understood instinctively that the old man was worried, something that rarely happened, and required of the Klee that it do whatever was necessary to make that worry disappear. There would be no restraints, no limits, and no recriminations for what happened. It was the Klee’s favorite kind of work. The Klee was to kill the magic user and everything and everyone that stood in the way of its doing so. Easy enough when you were the most dangerous creature alive. Easy enough when you knew you had never failed.

The Klee walked until it reached the spot where the magic had been expended. The taste and smell of it were still present, stronger here, pungent with power, a shadowy residue that hung on the air like smoke. The Klee stood where it was for a long time, drinking it in, as if it were a creature parched with thirst and the residue fresh, clean water. Its huge bulk shifted slightly as it tested the air over and over. Then it saw the footprints embedded in the soft mud of the riverbank. Without a second thought, it began to follow.