Though it doesnt seem likely for twins to have the same middle name, its clear that Castor and Pollux Stone both have Trouble in that spot on their birth certificates. But anyone whos met their grandmother Hazel will know they came by it honestly.Join the Stone twins for a laugh-filled ride as they connive, cajole, and bamboozle their way across the Solar System in the company of the most high-spirited and hilarious family in all of science fiction. This light-hearted tale has some of Heinleins sassiest dialogue. Oddly enough, its also a true example of family valuesfor when youre a Stone, your family is your highest priority.