This is volume 1 in Mouseheart .

This book has been graded for interest at 8-12 years.

There are 336 pages in this book. This book was published 2015 by Margaret K. McElderry Books .

Shelly Unwin is the author of the You're . series, illustrated by Katherine Battersby. Vivienne To has created designs for several animated feature films, and is the illustrator of The Sloth Who Came To Stay , written by Margaret Wild. Lisa Fiedler is an American author who has had several books published for younger readers, but this is her first teen title.