A Calculus of Angels

In an alternate eighteenth-century Europe devastated by alchemical disaster, Sir Isaac Newton and his able assistant, Benjamin Franklin, confront enemies who seek humankind's destruction

Sir Isaac Newton's discovery of philosopher's mercury in 1681 gave rise to a remarkable new branch of alchemical science. Forty years later, the world stands poised on the brink of a new dark age . . .

England is in ruins, crushed by an asteroid called to Earth by the very alchemy Newton unleashed. Franc...