chunk: They are attacked on the trail by a party of hostile Trailwomen. As a result of the attack, the Jay personality reappears, and is considerably more formal than the Jason personality. When they reach the Trailmen nest where Jay/Jason lived as a child, he is recognized. The party is invited into the Trailmen’s tree habitat.
  The Old Ones of the Sky People (Trailmen) inquire why Jay/Jason has brought an armed party of humans to their nest. Jay/Jason explains his mission, to find a remedy for 48-year-fever. He introduces Regis Hastur to the Old Ones, and Regis also pleads for the Sky People’s assistance. One hundred Trailmen volunteer. The party, with volunteers, returns to the Terran Trade City.
  Some months later, a serum is developed for the treatment of 48-year-fever. Regis Hastur arrives to congratulate Jay/Jason Allison. The exposure to Regis reminds Jay/Jason of the expedition, and causes Jay/Jason to merge into a third, more stable personality.