A dazzling quest whose outcome will raise humanity to unparalleled heights of glory—or ring down a curtain of endless night . . . 1681: When Sir Isaac Newton turns his restless mind to the ancient art of alchemy, he unleashes Philosopher's Mercury, a primal source of matter and a key to manipulating the four elements of Earth, Air, Fire, and Water. Now, as France and England battle for its control, Louis XIV calls for a new weapon—a mysterious device known only as Newton's Cannon. Half a world away, a young apprentice named Benjamin Franklin stumbles across a dangerous secret. Pursued by a deadly enemy—half scientist, half sorcerer—Ben makes his fugitive way to England. Only Newton himself can help him now. But who will help Sir Isaac? For he was not the first to unleash the Philosopher's Mercury. Others were there before him. Creatures as scornful of science as they are of mankind. And burning to be rid of both . . .

1722: A second Dark Age looms. An asteroid has devastated the Earth, called down by dire creatures who plot against the world of men. The brilliant—some say mad—Isaac Newton has taken refuge in ancient Prague. There, with his young apprentice Ben Franklin, he plumbs the secrets of the aetheric beings who have so nearly destroyed humanity. But their safety is tenuous. Peter the Great marches his unstoppable forces across Europe. And half a world away, Cotton Mather and Blackbeard the pirate assemble a party of colonial luminaries to cross the Atlantic and discover what has befallen the Old World. With them sails Red Shoes, a Choctaw shaman whose mysterious connections to the invisible world warn him that they are all moving toward a confrontation as violent as it is decisive . . .

There has never been an epic quite like The Age of Unreason . By interweaving reality with arcane fantasy, J. Gregory Keyes proves himself a literary alchemist who vividly recreates the eighteenth century–and brings it brilliantly to new life. When Sir Isaac Newton uncovered the secrets of alchemy, he could never have imagined the tragic results. Dark sorcery rules. Europe is lost and the American colonists have been driven south. The demonic creatures known as the Malekim won’t tolerate even a flicker of hope. Any who oppose them– Franklin, Voltaire, even the mysterious daughters of Lilith–will be swept away. However Benjamin Franklin and his secret society, the Junto, manage a precarious existence founded on the mutual trust of Native Americans, whites, and freed blacks. And as armies and alchemy clash, the Choctaw shaman Red Shoes witnesses a vision of an ancient, implacable evil–and of a young boy who shines as brightly as an angel . . . the fallen, avaricious kind .

“INVENTIVE AND EXCITING, FILLED WITH CLEVER DETAILS AND HIGH ADVENTURE, this brings to a close a sequence that seems likely to establish Keyes as one of the more significant and original new fantasy writers to appear in recent years.” – Science Fiction Chronicl e As the ruthless forces of Russia lay waste to the New World, English troops make landfall in the east, determined to reconquer the colonies. Trapped in between are the Native Americans, ex-slaves, and European refugees, led by Benjamin Franklin and the Choctaw shaman Red Shoes. But the balance of power rests with the French woman Adrienne de Montchevreuil, whose grasp of science is the equal of Franklin’s, whose magic may be stronger than the Choctaw, and whose shocking secret may call into question where her true allegiances lie...