Warlock

Vintage from the 1970s. Before his breakout novel INTENSITY, Dean Koontz wrote several science fiction novels, including this one.

From the back: THE BLANK was the time, near-forgotten but for the legends that remained as fancies, when the Earth's crust shifted mightily, and towering mountains rose where no mountains had existed before. New coastal lines were formed, while jungle became desert, and desert and grassy plain became the bottom of the new seas. The old world was gone... but the legends remained. And they told of marvels hard to believe, even among men who had mastered the powers of the mind. The stories told that before the Blank men possessed marvels almost unbelievable; it was even said that the old people had conquered the skies (and, in whispers, space itself). Men like Shaker Sandow knew there was the truth in the fancies...and then a would-be master of the world uncovered a trove of pre-Blank treasures, and once more the world turned toward all-consuming war!