A direct sequel to Spelunking Through Hell, has them finding a world for the refugees of the bottle world they were trapped in to settle and then get Thomas, Alice and Sally back to Earth. In typical fashion things never give them a break and they are sent to New York by the Queen of the Routewitches to deal with something that must be taken care of now. The novella at the end is a great payoff for fans of the mice. I enjoyed learning more about them and the event that caused a mouse to join the worship of the newest of the family gods.