A "fix-up" novel or collection of related stories (1986) - original appearances in Analog: Episode One is from 1978, and the rest from 1984-85.

Prelude: Man in the Cage
Episode One: End of the World
Episode Two: Child of the Sun
Episode Three: Man of the Hour
Episode Four: Touch of the Match
Episode Five: Woman of the Year
Episode Six: Will-of-the-Wisp