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

There are 224 pages in this book. This book was published 2018 by Feiwel & Friends .

Rebecca Stead grew up in New York City. Rebecca was a lawyer and wrote books for adults. This is her second book for children. Wendy Mass is the New York Times bestselling author of The Candymakers, Pi in the Sky, Every Soul a Star, Jeremy Fink and the Meaning of Life, and A Mango-Shaped Space.