Devlin Quick, whose single mother is NYC's police commissioner, is hosting a student from Argentina for three weeks of summer school. While working on an assignment in the maps collection at the NYC public library, Liza (I think that was her name) sees a man cut a map from a book. That starts Devlin, Liza, and Dev's friend Booker on a quest to discover the identity of the map thief, and bring him to justice--particularly difficult when no one believes what Liza saw, and when Devlin's mother forbids her to pursue the case when there is no evidence. Devlin believes her friend so ignores her mother's strictures and makes use of all the resources at her disposal, including the resources of the NYCPD. But even if they discover the identity of the thief, is there any way to bring him to justice?
Before I comment on other aspects of the book, I totally have to rant about how completely unbelievable the librarians were in this book. The whole plot is based on librarians blithely allowing Devlin and others to see who their borrowers are and what they borrowed, which goes directly against the Library Bill of Rights--borrower privacy is a key tenet of our profession, and I do not believe any NYC librarian would release that information without a subpoena. I also don't believe that if a librarian heard that a student saw someone cut a map from a valuable book, she would not take the time to check the day's books herself, since Liza knew the exact time and there weren't many books in use at that time. I do not believe that a librarian would instead just bluster and refuse to believe a child. The librarians in this book were in general rude, disbelieving, and unprofessional, and I was highly offended on their behalf at this representation of them.
My other librarian rant is that although I appreciate Devlin loving her middle school librarian, the list of books the librarian gave her just made me so frustrated--every single book was at least 50 years old, and many were far older. "Classics." As a middle school librarian myself, I would never hand a 7th grader a 200 year old "classic" unless they asked for it. I feel that in too many books, authors use "classics" as a shorthand for saying "this kid is smart." Why would someone want to write in the children's literature field without knowing the best recent books that a librarian would actually hand a smart student? At the very least, look at the Newberies. Think Holes, Wonder, Despereaux--so many thousands of better books to hand a student. If you want textual complexity, go for Hardinge or McKinley or Taylor. You know what, ASK A LIBRARIAN to recommend titles. Ok, end of rant.
Librarians aside, I thought this moved along well and had an interesting plot, and I liked the addition of the student from Argentina, and having Dev's mother be police commissioner is a unique and interesting angle for this series. I will admit I did not really like Dev. She is unethical, reckless, impulsive, and pushes her friends into danger. That said, I appreciate that she's the kind of girl who will grow up into a formidable woman who will get things done. So, she's believable and sometimes impressive, but I don't think we'd be friends. I will admit that I did skip over most of the "peril" part of the book, once the mystery was solved.