Visiting her grandmother in Australia, Livy, ten, is reminded of the promise she made five years before to Bob, a strange, green creature who cannot recall who or what he is.
Wendy Mass is the New York Times–bestselling author of The Candymakers series and many other novels for young readers, including the Schneider Family Book Award winner A Mango- Shaped Space, Jeremy Fink and the Meaning of Life (which was made into a feature film), Every Soul a Star, Pi in the Sky, the Twice Upon a Time series, and the Willow Falls series that began with 11 Birthdays. She and her family live in New Jersey.
Rebecca Stead is the New York Times–bestselling author of When You Reach Me, winner of the Newbery Medal; Liar & Spy; First Light; and Goodbye Stranger. Her work has been also been awarded the Boston Globe/Horn Book Award for Fiction and the Guardian Children’s Fiction Award.