Long ago, Gladia's robots Daneel and Giskard played a vital role in opening the worlds beyond the Solar system to Settlers from Earth. Now the conscience-strick

Science fiction-roman.

"The Caves of Steel"--Science fiction suspense as New York City detective, Elijah Baley, and his partner, a robot named R. Daneel Olivaw, investigate the murder

A millennium into the future two advances have altered the course of human history: the colonization of the Galaxy and the creation of the positronic brain. Isa