Elizabeth Verdick is the author of more than thirty highly acclaimed books for children and teenagers, including books in the Toddler Tools(TM) board book series, the Best Behavior(TM) series for young children, and the Laugh & Learn(TM) series for preteens. Elizabeth's daughter and son are the inspiration for nearly everything she writes. She lives with her husband, two children, and five pets near St. Paul, Minnesota.

Marieka Heinlen received her BFA at the University of Wisconsin, Madison, and also studied at Central Saint Martins College of Art and Design in London. She launched her career as an award-winning children's book illustrator with the original edition of Hands Are Not for Hitting and has illustrated all the books in the Best Behavior and Toddler Tools series. She lives in St. Paul, Minnesota, with her husband, son, and daughter.