"The Planet Savers" is a 1962 science fiction book by Marion Zimmer Bradley. It is part of her "Darkover" (a fictional world) series.
Desperate to discover a cure for the cyclical 48-year-fever, known as "Trailmen's fever", Dr. Randall Forth persuades a colleague, Dr. Jay Allison, to undergo hypnosis. He calls forth a secondary personality, Jason Allison, who is gregarious and an experienced mountain climber, while Dr. Jay Allison is a cold, clinical man with no outdoor skills...
This is just the beginning of a fantastic internal adventure!
(Tags : The Planet Savers: Darkover 1 Marion Zimmer Bradley Audiobook, Marion Zimmer Bradley Audio CD )