Others before him had tried—and failed. Ron Farr meant to succeed. He had come fully prepared to surmount whatever obstacles might lie in his path, to conquer the dread guardian jungle and its unknown terrors and return triumphant to Earth, master of destiny and possessor of undreamed of power. Farr knew the obstacles would be there, for he sought the secret of eternal life, the fabulous elixir that lay hidden somewhere on Phoebe, enigmatic moon of Saturn, and there was little doubt in his mind