I've read "The Eyre Affair", which is the first in the series. Someone is stealing the characters from books. First, a minor character disappears from Martin Chuzzlewit, but then Jane Eyre herself disappears from all copies of the book, and is being held for ransom. It's lighthearted and full of literary jokes and a bit fantastical. There are, for instance, the bookworms, who are fed on the unnecessary words in advertisements and excrete punctuation marks, so that whe'n yo:u are; aro"und the-m for, a whi;le you! start to talk funny. I enjoyed it a lot.