Storybound — Marissa Burt

When Una Fairchild stumbles upon a mysterious book buried deep in the basement of her school library, she thinks nothing of opening the cover and diving in. But instead of paging through a regular novel, Una suddenly finds herself Written In to the land of Story -- a world filled with Heroes and Villains and fairy-tale characters.

But not everything in Story is as magical as it seems. Una must figure out why she has been Written In -- and fast -- before anyone else discovers her secret. Together with her new friend Peter and a talking cat named Sam, Una digs deep into Story's shadowy past. She quickly realizes that she is tied to the world in ways she never could have imagined -- and it might be up to her to save it.