If you haven't experienced this juvenile fantasy series, do give it a try. I read the first one, Magyk a few years ago & have looked for Angie Sage's writing ever since.
Queste is the third book in the series, and the full title is Septimus Heap, Book 4 : Queste. First off, I love the main character, Septimus Heap. He's humble, but fun, he's not arrogant, but he is knowledgeable, interesting, full of great insight into the world & the people around him. Just a good kid, really. In Queste, Septimus has a bundle of concerns to deal with. One is, what to do with a character from Physik; two, what to do with the problem of someone trying to ill-wish him, and last but not least, how to retrieve two people who are lost in time.
I can't say too much more, lest I ruin the book for someone else, but I did want to mention that there's a marvelous character in here from the Manuscriptorium (library), who actually functions as a book & paper conservator. The character is fun, marvelous, and a real surprise. Loved everything about this book.... do read it.