Katherine Applegate is a #1 New York Times bestselling author who has written many children's books, including The One and Only Ivan, which won a Newbery Medal, Pocket Bear, Wishtree, Odder, Willodeen, Crendshaw and the Doggo & Pupper series. Katherine lives in Las Vegas with her loyal husband and naughty dog.

Gennifer Choldenko is the author of the Tales from Alcatraz series, which has sold more than two million copies, as well as several other books for young readers including Orphan Eleven, Chasing Secrets, and Al Capone Does My Shirts which won a Newbery Honor and twenty other awards. She is also the author of The Tenth Mistake of Hank Hooperman, a Texas Lone Star Reading List Selection. Gennifer lives in California, with her loyal husband and her naughty dog.