The Thirteenth Circle

Ages 9 to 12

The X-Files meets Scooby-Doo in this middle-grade mystery featuring two unexpected friends, crop circles, science fairs, and Men in Black, perfect for both the highly scientific and cryptid enthusiasts alike.

Cat knows aliens are real, and she’s determined to prove it. By studying her town’s legendary crop-circle phenomenon for the McMurray Youth Science Competition, she’ll not only demonstrate the existence of extraterrestrial life but also impress her distant NASA-scientist father.

Dani does not believe in aliens. So when Dani is paired with Cat for the competition—which she has to win to avoid her parents’ artsy summer camp—she knows she’s in trouble. Her solution? Disprove Cat’s theory, of course . . . without letting her partner know.

But as the girls bond over science, it becomes clear that there is something strange about the crop circles. And when Dani and Cat’s project is threatened by mysterious forces, they’ll have to work together to expose the truth once and for all.

About the Author

MarcyKate Connolly is a New York Times bestselling children’s book author who lives in New England with her family and a grumble of short-nosed dogs. She can be lured out from her writing cave with the promise of caffeine and new books. marcykate.com

Kathryn Holmes is the author of multiple books for kids and teens, but The Thirteenth Circle is her middle-grade debut. Kathryn grew up in Maryville, Tennessee, and now lives in Brooklyn, New York, with her husband, daughter, and piles upon piles of books. kathrynholmes.com