Illustrator M. Sarah Klise and author Kate Klise and are sisters and collaborators. They started making books together many years ago in their bedroom in Peoria, Illinois. Kate wrote the words; Sarah drew the pictures. Their first book was about an adventure-loving little mouse that traveled around the country. That story was never published. (In fact, it ended up in the garbage can!) But the Klise sisters had so much fun making their first book, they kept writing and drawing. And now they've published more than twenty award-winning books for young readers, including Regarding the Fountain and Dying to Meet You.

The Klise sisters no longer share a bedroom. Kate lives in Missouri and travels often to visit schools and libraries. Sarah lives in California. But the two sisters still enjoy working together, especially on their new series about a pair of circus mice. (By the way, Klise rhymes with mice.).