The number one Scare Team at Monsters, Inc., must come up with a solution when a girl named Boo makes her way onto the scare floor.

Gail Herman has written many books for children, including easy-to-reads such as Flower Girl, Otto the Cat, What a Hungry Puppy, and Step into Reading's own The Lion and the Mouse and There Is a Town. She has also written has written several biographies and nonfiction books, including Who Was Jackie Robinson? and What Is the World Series? She lives in Newton, Massachusetts.

Scott Tilley is an illustrator known for An Imaginary Friend, Monster Time, Boo on the Loose, Barbie in a Mermaid Tale 2 (Big Golden Book), and Toy to Toy.