Except for an unbelievably clunky and clumsy first 5-6 chapters (60+ pages), this book is pretty awesome in that it both introduces very interesting, mind-blowing science concepts (black holes, radiation out of black holes, and recapture of information from black holes) and also has a very fast-paced, page-turner adventure story (escaping from a black hole). However, I doubt that many people who are used to Harry Potter-style smoothness can manage to begin wading through the first 6 chapters (60+ pages), which are super-clunky, and still keep faith that there will be a good part of the book eventually. (I almost gave up and almost stopped reading altogether.) My advice is to either (1) keep faith or, even better, (2) skip the first 5 chapters completely (but suffer with chapter 6), and you won't miss a thing. If you really worry that you've missed something, you can go back and read chapters 1-5 after finishing the book. [See footnote at bottom of this review regarding why first 6 chapters are bad.]
Some other points worth noting are that (1) this story is of the formerly common type that feels the need to have an evil villain (who murders a main character, later resurrected) for storytelling convenience, even though good-vs-"pure evil" is not a theme in this book as it is in Harry Potter, and (2) the villain in this book is surprisingly scary, and is a teacher, which parents of very young kids might object to. I think the cavalier murder in this book is more scary than the murders in Harry Potter because in this book it just happens, and no one seems very outraged by it afterward (perhaps just because the victim was later resurrected?), and there is no punishment; it's as if murder were somehow ordinary and okay in this world, which I think is unsettling (perhaps inarticulably) to a child. Another point is that the last chapter seems clunky again and not true to actual children behavior (the student body cheers wildly at George's boring science lecture for no plausible reason), and is highly skippable for anyone who doesn't like the tone-deaf, moralizing aspects of the book.
To go beyond this book, if you like science wrapped in fiction for kids, you will LOVE "Clan Apis" (
Clan Apis) by Jay Hosler, which is the best science-wrapped-in-fiction book that I have ever read, and is beautiful for adults (it may make some cry, in a good way) and great for a child of any age; my boy loved it at age 2. For older kids and for adults, the classic "Mr. Thompkins In Paperback" by George Gamow is awesome, but don't bother with the "updated" version, "New Adventures of Mr. Thompkins" by Russell Stannard and the still-deceased George Gamow, because the updated version shovels boring lecture-mode verbosity into George Gamow's light and whimsical prose. Stannard's "Uncle Albert" series of books (e.g.,
Black Holes and Uncle Albert) is extremely good--in many ways better than this "George's Secret Key .." book by the Hawkings because the "Uncle Albert" books have better, more in-depth science. But this Hawkings' book has a more intense adventure and a slightly more mind-bending and rarely-mentioned (but superficially treated) science topic: recapture of information from a black hole. Of course, "The Magic Schoolbus" series and "The Magic Treehouse" series are good, too, for knowledge-wrapped-in-fiction. Please, fellow reviewers, tell us about other good knowledge-in-fiction stories, as did our fellow reviewer Sandhya when he mentioned "Sophie's World". Thanks.
[Footnote: The first 6 chapters (and the last chapter) of this "George's Secret Key ..." book are so bad that they almost seem to be written by a different set of authors as the rest of the book. In the first 6 chapters, instead of using science as part of the story, the book teaches science only via very boring LECTURE after LECTURE from the neighbor-girl's dad to the title character George. Also, in the first 6 chapters, there is some annoyingly heavy-handed and inelegant moralizing and social commentary. Also, there are just too many unnecessary details that don't move the story along in the first 6 chapters. The free excerpt on the Amazon site (i.e., the book's first 10 pages) give a hint of the over-verbosity of the first 60+ pages of the book. 10 whole pages into the Amazon excerpt, and nothing has happened except a pig is discovered missing, and we haven't left the house yet, and nothing will happen for many more pages! For just one example among many of over-detailedness, we can see that the authors spend many words on the pig, but the words on the pig are a big waste of time because the pig will cease to matter the second the boy goes next door! Further to the free excerpt on Amazon's page, I will in the "comments" section give another example passage that shows the clumsiness of the first 6 chapters. ]