Lummox had been the Stuart family pet for years. Though far from cuddly andrather large, it had always been obedient and docile. Except, that is, for thetime it had eaten the secondhand Buick! But now, all of a sudden and withoutexplanation, Lummox had begun chomping down on a variety of things — notleast, a very mean dog and a cage of virtually indestructible steel. Incredible!John Thomas and Lummox were soon in awfully hot water, and they didn't know howto get out. And neither one really understood just how bad things were —or how bad the situation could get — until some space voyagers appear andturn a far-from-ordinary family problem into an extraordinaryconfrontation!