Kate Messner is passionately curious and writes books that encourage kids to wonder, too. Her titles include award-winning picture books, like Over and Under the Snow; novels, like Breakout and Chirp; the Fergus and Zeke easy reader series and the popular Ranger in Time chapter books; and works of nonfiction with a focus on nature and history. Before becoming a full-time writer, Kate was a TV journalist and a National Board–certified middle school English teacher. She lives on Lake Champlain with her family and has managed to summit all forty-six Adirondack High Peaks between book deadlines.

Justin Greenwood is an artist best known for his work on comic book series, including Torrent, Area 510, Stumptown, Crone, The Last Siege, and The Fuse, and the nonfiction graphic novel Alexander Hamilton: The Graphic History of an American Founding Father. Born and raised in the Bay Area, he attended the Academy of Art University in San Francisco and graduated with a BFA in traditional illustration. When he’s not drawing, you can find him hanging with his wife and kids around the foothills of the Sierra Nevada, pretending to pan for gold while trying to sneak an occasional nap.