Rebecca Stead is the New York Times bestselling author of When You Reach Me, Liar & Spy, First Light, Goodbye Stranger, Bob, and, most recently, The List of Things That Will Not Change. Her books have been awarded the Newbery Medal, the Boston Globe/Horn Book Award for Fiction and the Guardian Children’s Fiction Prize. Rebecca lives in New York City, where she is always on the lookout for her next story idea.
Wendy Mass is the New York Times bestselling author of The Candymakers series, Bob, 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.