Asimov used this planet-hopping itinerary in most of the volumes of the "Foundation" series from "Foundation and Empire" onward. Unlike the detective fiction methods of the previous Robot novels, where Baley assembles the clues to a crime that had been committed, in "Robots and Empire" a murderous conspiracy developing against the Earth, and its discovery by the robots, keep pace with each other right up through the final confrontation with Amadiro on the Earth. Then, the robots have only moments to spare in terminating Amadiro's evil plan for a quick death to all Earthlings.