A broken crown. A sister's secret. 

A choice to save the world-or destroy it. 

 

After a lifetime of being the younger sister—of following Sophie through countless Experiences and up a fireplace into a magical land— it’s finally Claire Martinson’s turn to lead. And she'll do anything to keep her big sister safe, though it may require her to battle deadly wraiths, experiment with dangerous magic, and become a thief in disguise.

 

But the secrets of the unicorns are deeper than anyone could have ever imagined. Does Claire have what it takes to ignite the long-buried magic of this world and wake the fire in the stars? Or will the true salvation of Arden rest on one final and heartbreaking sacrifice?