The Ringworld Engineers by Larry Niven

In the decade since its first
appearance, RINGWORLD has become the most talk-about locale in Known Space and made the name of Larry Niven synonymous with ingenious, inimitable SF.
THE RINGWORLD ENGINEERS sees the return of Louis Wu (now hooked on electrical ecstasy as a wirehead) and the aging kzin warrior Speaker-To-Animals, while introducing the Hindmost, puppeteer mate of made Nessus: Together the bizzare crew. seek to avert tragic cataclysm in the Ringworld System.
THE RINGWORLD ENGINEERS confirms Larry Niven's reputation as one of the foremost living writers of SF.

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