Lisa Yee has taken a private-investigator course, and it's slightly possible that she's a secret undercover operative. She's also the New York Times bestselling author of The Misfits, as well as a Newbery Honoree and a National Book Award finalist for Maizy Chen's Last Chance. Some of her other twenty-one novels are the groundbreaking Millicent Min, Girl Genius; Stanford Wong Flunks Big-Time; and the DC Super Hero Girls series. A frequent contributor to NPR's Books We Love, she divides her time between Western Massachusetts and Los Angeles.

Dan Santat is a #1 New York Times bestselling author and illustrator of over a hundred books. His picture book The Adventures of Beekle: The Unimaginary Friend received the Caldecott Medal, and his graphic novel A First Time for Everything won the National Book Award. Dan is also the creator of the Disney animated hit The Replacements. He lives in Southern California with his family.