As an avid reader of Heinlein, I was a little disappointed by this novel, but not overly so. A fairly interesting little mystery, but you can pretty much figure out the plot within the first few pages or so. In fact, this book lacks a great deal of the social commentary that is Heinlein's hallmark, though it is not devoid of it. Read it as a study in character development -- he does a fine job of letting the main character develop and change, and while our heartstrings aren't tugged quite as mercilessly as in other RAH novels, it's still an enjoyable read for an evening.