One

One is a young adult novel written in free verse that centers on conjoined twins Grace and Tippi as they leave their homeschooled life to attend high school for the first time. The story follows the sisters as they navigate teenage friendships, school routines, and a looming decision that will shape their futures. The book has won several awards, including the Carnegie Medal, the YA Book Prize, and the Children's Books Ireland Book of the Year Award, and is targeted at readers in grades 9-12.