- Series: Elijah Baley / R. Daneel Olivaw Series Record # 22325
- Sub-series of: The Positronic Robot Stories
- Series Tags: robots (8), science fiction (7), mystery (4), androids (4), detective (4), android (4), agoraphobia (2), into-tv (2), murder (2), overpopulation (2), galactic empire (2), longevity (1), empathy (1), racism (1), psychohistory (1), physics (1), oratory (1), Solar power (1), interstellar travel (1), beards (1), radioactivity (1), Les 100 principaux titres de la science-fiction (1), interstellar war (1), logic (1), psychology (1), bigotry (1), artificial intelligence (1), academia (1), underground city (1), arcology (1), mind control (1), into-video game (1), robotics (1), Laws of Robotics (1), series (1), positronic robots (1), space colonies (1), politics (1), psi powers (1), future histories (1), starship (1), hyperspace (1), uranium (1), fusion reactors (1), death (1), evolution (1), infrasound (1), telepathy (1), Pennsylvania (1), New York City (1), flying cars (1), friendship (1), genetic engineering (1), hyperwave (1), ansible (1)