The Caves of Steel is a science fiction novel by Isaac Asimov. It is the first book in the Robot series and introduces the reader to a future Earth where humans and robots coexist. The story follows a detective and a robot partner as they investigate a murder in a society divided between the Spacers, who live in outer space, and the Earthmen. With its blend of mystery and science fiction, The Caves of Steel is a captivating entry point into the Robot Revolution Saga.