Isaac Asimov's Robot City, a series of novels written by various authors and loosely connected to Isaac Asimov's Robot Series
New York City | Mexico City | Kansas City, Missouri | Kansas City | Salt Lake City | Quebec City | Oklahoma City | City of London | city | Vatican City | New York City Subway | Panama City | Kansas City Chiefs | Kansas City Royals | Sex and the City | Mayor of New York City | Atlantic City, New Jersey | Utrecht (city) | Cork (city) | New York City Ballet | Manchester City F.C. | Jersey City, New Jersey | New York City Opera | Guatemala City | Atlantic City | Quezon City | City College of New York | Ho Chi Minh City | Groningen (city) | Birmingham City F.C. |
He has written novels using the Three Laws of Robotics invented by Isaac Asimov, including two entries in the Robot City series and the entire Robots in Time series.
Because Robot City has no spaceport, space ships or any way to radio for help, their only hope is to find the Key of Perihelion, an advanced transporting device that brought them to Robot City, and use it to transport elsewhere.