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Title: A Good Start, but A Let-Down in the End
Review: The Cat Who Walks Through Walls starts out well. For the first two-thirds of the book it is a sequel to The Moon Is A Harsh Mistress, Heinlein's best post-1960 work. But, in the end, it turns into a sequel to The Number of the Beast, a rather weak book. It would have been nice if Heinlein had resisted the tempation to end the book the way he did.
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