Kate McKinnon is set to publish her debut novel.

Little, Brown Books for Young Readers (LBYR), a division of Hachette Book Group, will publish the Saturday Night Live alum’s novel, it was announced Monday by Megan Tingley, LBYR president and publisher.

The book, called The Millicent Quibb School of Etiquette for Young Ladies of Mad Science, will be the first of an upcoming middle-grade series and center on the Porch Sisters (Gertrude, Eugenia and Dee-Dee) and the town of Antiquarium’s lone mad scientist, Millicent Quibb.

“I wanted to write the kind of book that I would have loved reading when I was younger, when I was eating honeysuckle on the playground and collecting bugs and falling in love with the natural world,” McKinnon said in a statement.

She added, “I hope young people read about the adventures of the Porch Sisters and are inspired to get out there and have their own adventures. I started playing with the idea of these characters and this world over a decade ago and am so thrilled to finally bring them to an audience, especially with a team as wonderful as the one at LBYR.”

The illustrated book will primarily feature artwork that McKinnon herself drafted, including character drawings, inventions and diagrams. The book is illustrated by Alfredo Cáceres.

The Millicent Quibb School of Etiquette for Young Ladies of Mad Science

Little, Brown Books for Young Readers

The synopsis reads: “Gertrude, Eugenia, and Dee-Dee Porch do not belong. They don’t belong in the snooty town of Antiquarium, where all girls must go to etiquette school and all dogs must be bichon frises. They don’t belong with their adoptive family: their uptight Aunt Desdemona, their materialistic Uncle Ansel and their seven snide cousins, who are all named Lavinia. And they certainly don’t belong at Mrs. Wintermacher’s etiquette school — they’re far more interested in machines and slugs than posture and little forks. After Mrs. Wintermacher expels them for insubordination, the girls expect to be sent away for good … until they receive a mysterious invitation to a new school. Suddenly, the girls find themselves under the tutelage of the infamous Millicent Quibb — a mad scientist with worms in her hair and oysters in her bathtub. At 231 Mysterium Way, the pizza is fatal, the bus is powered by gerbils, and the dean of students is a hermit crab. Dangerous? Yes! More fun than they’ve ever had? Absolutely! But when the sisters are asked to save their town from an evil cabal of nefarious mad scientists, they must learn to embrace what has always made them stand out and determine what side they’re on — before it’s too late!”

“Kate McKinnon has brought all the intelligence, energy and go-for-broke comedic genius she has on stage to the pages of this book. Her essential message that being weird is exactly what makes you wonderful will inspire and empower young readers everywhere,” Tingley said.

LBYR executive editor Erika Turner acquired North American rights from Ted Malawer at Upstart Crow Literary and will edit the project. McKinnon is repped by CAA with Artists First management. McKinnon’s legal rep is Hansen, Jacobsen, Teller.

The Millicent Quibb School of Etiquette for Young Ladies of Mad Science will release on Oct. 1, 2024.