This book marks a change in the illustrator and, it seemed to me, writing style of the Nancy Drew books. I am a little sad to lose the more minimalist/sketchy illustrations of the previous books, but I'm sure I'll get used to these new ones soon. As for the writing changes, I believe this is the first time Dave, Burt, and Ned are referred to explicitly as boyfriends, a lot being said about the difference between amateur and professional detectives, and, at least in the case of Bess seducing a customs officer, a more explicit use of their "feminine wiles". The rest of the mystery is pretty standard Nancy Drew with some insensitive remarks about other cultures, Nancy having conveniently useful skills (speaking Spanish), and of course the boys' plan being hijacked. I was a little concerned that Nancy was going to the movies and attending parties while a child had been kidnapped, especially when the child's family was clearly very anguished. Don't get me wrong, I loved reading this, but because I love it I also acknowledge it's shortcomings.