Eleven-year-old Princess Celie lives with her parents, the king and queen, and her brothers and sister at Castle Glower, which adds rooms or stairways or secret passageways most every Tuesday, and when the king and queen are ambushed while travelling, it is up to Celie--the castle's favorite--with her secret knowledge of its never-ending twists and turns, to protect their home and save their kingdom.

Thursday brings even more adventure in the third book of this delightful New York Times bestselling series from Jessica Day George.
Castle Glower has been acting weird, so it's no surprise when two towers transport Celie and her siblings to an unknown land. When they realize that no one from home is coming to get them, the kids—along with Celie's pet griffin Rufus—set out through the forest to figure out where they are...

Princess Celie and her companions have made it home safely from the Glorious Arkower, and everything is back to normal now that the Eye of the Castle is where it belongs. With more magical griffins to care for, Celie, Lilah, and Rolf have their hands full. But when the dangerous ancient wizard Arkwright escapes the dungeon and goes missing within the Castle, no one can rest until he is found. Only Celie knows where he is most likely hiding—deep...

"After traveling to the seaside kingdom of Lilah's betrothed prince, Lulath, Celie and her companions are busy training griffins, enjoying wedding festivities, and finishing construction of a grand ship built from parts of the Castle. But on their maiden voyage, the Ship steers them far off course into uncharted waters"--