A Lonely Girl, a Mysterious Friend, and a Deadly Secret…

Ten-year-old Morgan has only her cat, Merlin, for company. Desperate for a friend, she conjures one from her imagination—Arthur. But Arthur is far from imaginary… and far from kind.

When he reveals himself as Arthur Pendragon, Prince of Camelot, Morgan's world shatters. Before she can escape, he traps her in the depths of a long-forgotten crystal cave, sealed away from the world above.

Can Morgan find a way out, or is she doomed to remain a prisoner of magic and myth forever?