It's fast-paced and easy to zip through, which is about the best that can be said. It's not that the book's bad, but there's not a lot of meat here of any kind. Yeah, it's a kids' book, but the antagonist is particularly thin, and it's too easily wrapped up at the end. Also, I know that kids' books often find ways to get the parents out of the way pretty quick, but you can't tell me that Benjamin Sisko of all people would watch a ship with his kidnapped child zoom away from DS9 and go, essentially, "Eh, let's sort this out diplomatically." I don't think so - he'd be following that warp trail in less time than it takes me to write this review.
I remember reading another one of these junior DS9 novels, and he was an extraordinarily indifferent parent there as well. Now, Star Trek has its share of useless parents but trying to frame Sisko - of all people! - that way beggars belief.
Jake and Nog are kidnapped. They have an adventure on another planet. The books describes the Fjori men as having beards, however the illustrations show them with mustache only.
I totally understand trying to capitalize on a popular franchise, such as Star Trek (and all it's incarnations), but the problem with a book like this is that it necessarily features two incredibly dull characters from the series.
A knowledge of these characters is necessary as there is no character building/description in the book. This prevents the random reader from picking up and enjoying this kind of book.
The other problem with a book such as this is that it requires a moral ... a lesson learned for that young reader. In the better books I've read that lesson is well woven into the story. Here it is worn on the shirt-sleeve. The reader is practically hit over the head with the good-deeds-win-out lesson, and the sudden switch from jerk to friend by the guest villian du jour.
Horribly predictable and pointless, "Gypsy World" is a novel that doesn't really give anything to a reader. Another example of storytelling that insults its readers with blatant simplicity.