 What didn't Roger learn when he returned to Earth?
If it only had a lease that could be broken— Roger Tennant, crossing the lawn, could see two of the three wings of the house, which radiated spoke-like from its heptagonal central portion. Their captors had no idea of how a woven design should behave. They entered the house, which had no roof, continued to move beneath a sky that glowed with light which did not come from a sun or moon. It arrived before the meal, materializing against one of the seven walls of the roofless chamber. Olga sat up straight, her pale blue eyes round with utter disbelief. Somehow it brings things closer...." This was so with all of their foods, with their cigarettes, with everything in their prison—or their cage.
 that he could stay if he used his new powers
 that the aliens couldn't capture other men  that he had been in a car accident  that his wife had found someone new  that he could stay if he used his new powers