Flinx in Flux (1988) is a science fiction novel written by Alan Dean Foster. The book is fifth chronologically in the Pip and Flinx series. Flinx finds a woman unconscious on a riverbank deep in the jungles of Alaspin where he has gone to release Pip’s offspring. The woman, Clarity Held, turns out to be a research scientist last working on the inhospitable world of Longtunnel. He returns Clarity to her research station, only to encounter his old friends, the Ulru-Ujurrians, who help him psychically touch the threat that drove the ancient alien race, the Xunca, from the known universe.