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. He also illustrated The Blur, Lift, and Drawn Together, both written by Minh Lê, which received critical acclaim. Dan is also the creator of the Disney animated hit The Replacements. He lives in Southern California with his family.