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