Colleen AF (Ann Felicity) Venable is the author of many books for kids and was longlisted for a National Book Award for her YA graphic novel debut, Kiss Number 8. Colleen splits her time between Brooklyn, New York, and an old house in Western Massachusetts that she's rebuilding with friends. When she's not writing books, she can be found working at animal rescues, failing at imitating birdcalls, and getting very excited when she spots a frog.

Stephanie Yue is the illustrator of several picture books and chapter books in addition to Katie the Catsitter, and was the colorist for Smile by Raina Telgemeier. Steph travels the world by motorbike and spent the past year and a half converting a Sprinter van into a full-time mobile studio. She's currently drawing the next Katie the Catsitter from all over North America, and eating and climbing all the things.