A millennium into the future, two advancements have altered the course of human history:  the colonization of the Galaxy and the creation of the positronic brain.  On the beautiful Outer World planet of Solaria, a handful of human colonists lead a hermit-like existence, their every need attended to by their faithful robot servants.  To this strange and provocative planet comes Detective Elijah Baley, sent from the streets of New York with his positronic partner, the robot R. Daneel Olivaw, to solve an incredible murder that has rocked Solaria to its foundations.  The victim had been so reclusive that he appeared to his associates only through holographic projection.  Yet someone had gotten close enough to bludgeon him to death while robots looked on.  Now Baley and Olivaw are faced with two clear impossibilities:  Either the Solarian was killed by one of his robots--unthinkable under the laws of Robotics--or he was killed by the woman who loved him so much that she never came into his presence!

艾萨克·阿西莫夫（1920-1992），俄裔美籍作家，被全世界的读者誉为“神一样的人”；美国政府授予他“国家的资源与自然的奇迹”这个独一无二的称号，以表彰他在“拓展人类想象力”上做出的杰出贡献。

阿西莫夫是一个全知全能的作家，其著作几乎覆盖人类生活的一切方面，上天下海、古往今来、从恐龙到亚原子到全宇宙无所不包，从通俗小说到罗马帝国史，从科普读物到远东千年历史，从圣经指南，到科学指南，到两性生活指南，每一部著作都朴实、严谨而又充满幽默风趣的格调，为了尽情发挥自己诙谐搞笑的天赋，他甚至还写过一本《笑话集》。

到了晚年，他开始变得“好色”，出版了一系列两性话题的“黄书”。

他提出的“机器人学三定律”是当代机器人学的基本法则，他预言了今天的生物科技，预言了互联网时代的数字图书馆，预言了人类将进行太空殖民。

终其一生，阿西莫夫最引以为豪的则是：《银河帝国》系列小说。