In this, one of author Heinlein's last novels, a preacher is accidentally transported to an alternate universe and into the affections of an attractive women. When they are separated by the boundaries of Heaven and Hell, he must make a decision about what is more important, his soul or his love.
After he firewalked in Polynesia, the world wasn't the same for Alexander Hergensheimer, now called Alec Graham. As natural accidents occurred without cease, Alex knew Armageddon and the Day of Judgement were near. Somehow he had to bring his beloved heathen, Margrethe, to a state of grace, and, while he was at it, save the rest of the world ..