The second book in the Inkheart trilogy:
A year has passed since the magical events caused by Inkheart, changing Meggie's life forever. While she's still filled with excitement, the estranged Dustfinger longs for a way to return to his "world of words" and will do anything to see his beloved home. His actions cause Inkheart's characters to be whisked away into an unfamiliar Inkworld where a war between princes and rebels has begun to brew.
Cornelia Funke - Inkspell