Super Short Summary

In Tuesdays at the Castle by Jessica Day George, eleven-year-old Princess Celie and her siblings strive to protect their kingdom of Sleyne from invaders after their parents go missing. With the help of Castle Glower, a magical castle that changes shape at will, Celie undertakes the grown-up task of documenting the ever-changing structure, ultimately using her knowledge to thwart an assassination plot and unite her family. The book includes dark events such as an assassination plot against the royal family.