This is a hodge-podge of background information on nearly everything sneaky, mysterious, confidential, or spooky. The selection of material ties into some of the best parts of those handbook-type guides that are flying off the shelves right now. It's part secret agent training manual, part mythbusting how-to.
This being said, this book is not the sort of thing that you would encourage someone (particularly a younger kid, no matter how enthusiastic) to read in the traditional cover-to-cover, front-to-back sense. It's meant to be picked up and skipped through. The setup encourages this at every opportunity with cross-referencing tabs on the bottom of pages that prompt the kids backwards (or forwards) to other articles in the book on related subjects. The "secrets" within are so interesting though that one can see how a kid might start opening to random sections, and end up reading the whole thing. The diagrams and spreads inside are dynamic and eye-catching, and are almost more similar to what someone might see on the better kid-savvy websites out there than in a reference-type book, or even many of those same aforementioned handbooks that are so popular right now. These same spreads, which often force your eye to bounce all over the page are bound to annoy some adults, but are probably not going to perturb today's kids that have been accustomed to browsing the frenetic web almost since they left the cradle.
There are a few times where it appears that the "fun" aspect overrides the "practical" where readability/clarity of the text is sacrificed a bit for an interesting/cool graphic effect, and several of the foldouts (particularly the flimsy presidential heads in the section on the bizarre Kennedy-Lincoln connection) are bound to take a heavy beating in a public library or anywhere as young hands eagerly flip back the pages. Still, there was a lot to love here.