- Series: Trantorian Empire Series Record # 570
- Sub-series of: Foundation Universe
- Webpages: Wikipedia-EN
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Note: The series title in Turkish is: Galaktik İmparatorluk Serisi
- Series Tags: science fiction (5), galactic empire (2), romance (2), rebellion (2), space opera (2), amnesia (1), psychic probe (1), only humans (1), cloak and dagger (1), interstellar travel (1), feudal society (1), hyperspace travel (1), Horsehead Nebula (1), Earth (1), ansible (1), hyperspace (1), cloak & dagger (1), politics (1), far future (1), galactic empires (1), pulp SF (1), Dimension X (1), Chicago (1), enhanced intelligence (1), time travel (1), into-radio (1), chess (1), 1950 (1)