Called to the Spacer world to solve a case of roboticide, New York City detective Elijah Baley teams up with humanoid robot R. Daneel Olivaw to prove that the prime suspect, a renowned roboticist, is innocent of the crime. Reprint.
- Published: 1983
- Hugo Award for Best Novel, 1984 —
- Locus Award for Best Science Fiction Novel, 1984 —