Dreamfall

A science fiction adventure-thriller by Hugo Award-winner Joan D. Vinge. Cat, the popular anti-hero of "Psion "and "Catspaw," " "tries to go home to a planet inhabited by Hydrans, the telepathic humanoid aliens from whom he gets his own mind-powers. Love, danger, and controversy all follow him as he tries to mine "dreamfall," the physical embodiment of thoughts that accumulate in bizarre, fascinating deposits, like a mineral, but with far greater complexities, on the planet.