I received this book as a Christmas gift from family members. It's not a bad book, but neither can I say it gripped me either.
The book is a random assortment of factoids, articles, etc, that the publishers think most people don't know or would find interesting. It's writing style is generally that of Ripley's Believe It or Not, NY Post's Page Six, or the Reader's Digest --- short, shallow, sensationalistic --- which generally rubs me the wrong way.
Some topics are interesting; however, as is the case with tabloid journalism and mainstream entertainment media, there's a persistent tendency to play up the tawdry, the grotesque, and the freakish. Serial killers, cult leaders, nut cases, and odd balls get their day in much of this book.
As a history buff, most annoying, there's a willingness to miss the forest for the trees when covering famous people. For example, focusing on the quirks or flaw in some historical figure to the exclusion of informing the reader of that person's role in changing history or broadening human knowledge. I especially loathed segments in it on some luminary discussing their sex life --- and the only justification for it being "Some experts think that [so-and-so] was secretly a [fill-in-the-blank sexual such and such]" --- no facts, no evidence, no documentation to back such conjecture --- just some unnamed experts idle ruminations. It's sloppy, lazy journalism --- doesn't inform, doesn't educate, and skews those who, prior to reading the article, may have known little about the person into thinking that this or that relatively minor issue or quirk is the predominant thing to know about them when there was so much more to them and none of the article's unsupported speculations may even be true.
It's not a bad book. I guess it's a good bathroom book --- something to read while doing one's business on the can, to occupy the time with something titillating or mindless . But, if you want to find good information on a person, place, or event --- my advice --- get the most reputable book you can find on it that discusses it in context to inform, not just entertain, instead of something from pop media.