Five agonizing years have passed since the tragedy in the terrifying, creature-filled Below World under Mt. Katart. Recently, Josh Boone noticed strange creatures around the mountain, and then he discovered a magical black opal. Is the time right for Josh to return to the Below World and right some wrongs, and maybe discover what really happened that terrible day? Will his friends go on another dangerous adventure with him? Will Josh reunite with Kroggy, the giant cat-frog creature he met in the Below World five years ago? Will anybody survive the Curse of the Black Opals? Length: 339 Pages