Alan Dean Foster’s Splinter of the Mind’s Eye—written as a potential sequel to A New Hope—is a fascinating look at the direction the Star Wars saga may have gone. After crash landing on a jungle planet, Luke and Leia once again find themselves pitted against the Empire. But before they can escape, they must investigate local rumors of something known as a "Kaiburr crystal"—an object in which Darth Vader also has great interest.