Inkheart is a fantasy about books and people who love them. Imagine someone who's so compelling when they read aloud that the book they're reading comes alive, literally. People and creatures from the book they're reading magically appear in the real world. The downside is that for every creature that pops into this world one has to disappear into the book.
Years ago a nasty villain named Capricorn was read right out of a book. Now this evil man is determined to find the reader, who's been hiding ever since, and have him read other dark and deadly creatures from the book called Inkheart. Highly recommended.
I have an 11 year old granddaughter who's read this book. It's appropriate for kids, but it can be quite a dark tale at times. If your kids are prone to nightmares this might be a book to save for their teen years. On the other hand I think of this quote when I read children's books that seem a bit dark:
Fairy tales do not tell children the dragons exist. Children already know that dragons exist. Fairy tales tell children the dragons can be killed. — G. K. Chesterton