Betrayer of Worlds: Prelude to Ringworld: 4 (Known Space) - Softcover

"Exceptional freshness and suspense . . . full of startling revelations about human and puppeteer politics." --Booklist

"A new Known Space book, particularly one with new information about Puppeteers and their doings behind the scenes of human history, needs recommending within the science fiction community about as much as a new Harry Potter novel does - well, anywhere. But Niven and Lerner have produced a novel that can stand on its own as well as part of the Known Space franchise." --Locus

"A far-future SF mystery/adventure set two centuries before the discovery of the Ringworld by humans. . . . . Intriguing human and alien characters and lucid scientific detail." --Library Journal

"A very worthy addition to the ongoing Known Space future history." --SciFi.com

Larry Niven is the award-winning author of the Ringworld series, along with many other science fiction masterpieces, and fantasy novels including the Magic Goes Away series. Beowulf's Children, co-authored with Jerry Pournelle and Steven Barnes, was a New York Times bestseller. He has received the Nebula Award, five Hugos, four Locus Awards, two Ditmars, the Prometheus, and the Robert A. Heinlein Award, among other honors. He lives in Chatsworth, California.

Edward M. Lerner has degrees in physics and computer science, a background that kept him mostly out of trouble until he began writing science fiction full-time. His books include Probe, Moonstruck, and the collection Creative Destruction, and he has collaborated with Larry Niven on the other books in the Fleet of Worlds series. He lives in Virginia with his wife, Ruth.