In 2026, the Earth faces an unexpected disaster. A supernova in the nearby Alpha Centauri system has apparently wiped out nearly every electronic component on the planet, leaving human civilization paralyzed. Phones don't work, transportation grinds to a halt, and essential services such as medical care are thrown back into the Stone Age. As the world tries to cope with this technological cut-off, a man dying of cancer begins a journey to save his life and that of his fellow patients, a master criminal escapes a sentence of “judiciary sleep,” a returning Mars expedition faces what looks like certain death, and U.S. president Saul Steinmetz strives to keep his country from falling apart. Author Charles Sheffield has taken a classic hard-SF concept, applied it to the real world, and created a gripping story of survival.

18th Century Europe: It is an age when superstition is beginning to give way to the force of human reason, and no man so fully embodies the spirit of the times as Dr. Erasmus Darwin. Thinker, healer, and explorer of the bizarre and the seemingly supernatural, no mystery can stand for long against Darwin’s enlightened analysis. And there are far more mysteries than history knows… For Erasmus Darwin’s world is filled with oddities that most cannot believe: from unknown beings lurking just outside the boundaries of civilization, to anomalies that even the greatest natural philosophers will be hard-pressed to explain, to mysterious deaths that give rise to fears of malevolent sorcery. And when the renowned Dr. Darwin is called upon to heal a man dying of an ailment that seems impossible, he has no idea that it is the beginning of a quest that will lead him to the darkest corners of Europe, and a stunning encounter with the most famous inhabitant of a certain Scottish loch…