SARAH MLYNOWSKI is the New York Times bestselling author and coauthor of lots of books for tweens and teens, including the Best Wishes series, the Whatever After series, and the Upside-Down Magic series, which was adapted into a movie for the Disney Channel. Born in Montreal, Sarah lived in New York City for many years and now lives in Los Angeles with her family. Visit her online at sarahm.com.

CHRISTINA SOONTORNVAT is the bestselling author of the Newbery Honor books The Last Mapmaker, A Wish in the Dark, and All Thirteen: The Incredible Cave Rescue of the Thai Boys’ Soccer Team and several other books for young readers, including the Legends of Lotus Island series and the graphic novel The Tryout. Christina spent a decade working in the science museum field, where she designed programs and exhibits to get kids excited about science and STEM. Christina lives in Austin, Texas, with her husband, two young children, and one old cat. Learn more at soontornvat.com.