See where it all began with the start to Jessica Day George's bestselling series about a castle that can rebuild itself and the children who defend it.

Tuesdays at Castle Glower are Princess Celie's favorite days. That's because on Tuesdays the Castle adds a new room, a turret, or sometimes even an entire wing. No one ever knows what the Castle will do next, and no one-other than Celie, that is-takes the time to map out the new additions.

But when King and Queen Glower are ambushed and their fate is unknown, it's up to Celie, with her secret knowledge of the castle's never-ending twists and turns, to protect their home and save their kingdom.

Don't miss these other stories from New York Times bestselling author Jessica Day George:

The Rose Legacy series
The Rose Legacy

Tuesdays at the Castle series
Tuesdays at the Castle
Wednesdays in the Tower
Thursdays with the Crown
Fridays with the Wizards
Saturdays at Sea

Dragon Slippers series
Dragon Slippers
Dragon Flight
Dragon Spear

The Twelve Dancing Princesses series
Princess of the Midnight Ball
Princess of Glass
Princess of the Silver Woods

Sun and Moon, Ice and Snow

Silver in the Blood