Darkover series
The Shadow Matrix
Marion Zimmer Bradley 1997
Synopsis
The Shadow Matrix is a science fiction novel by Marion Zimmer Bradley and Adrienne Martine-Barnes in the Darkover series. It was first published by in hardcover by DAW Books in 1996. Since the book involves time travel, it falls in both the Darkover time periods that the author called "Against the Terrans: The Second Age " and in the Ages of Chaos.