The legendary Book of Mysteries was said to hold all the knowledge of mankind, and Charlotte wants it. Badly.
To find it, she must follow a treasure map discovered in a hidden compartment of her new vessel, Pride of the Sea. Their ship pulled by giant manta rays, Charlotte and her troupe embark on a journey that will pit them against the mighty kraken and take them to the ends of the earth and beyond.
They’ve already been through hell together, helping one another face the most harrowing perils. But this is different. The map can’t even begin to hint at the unknown terrors, strange lands, and stranger people that await them as they descend a seemingly endless rocky staircase into the heart of a volcano.
For this adventure, they will need more than their swords and wits. Their friendships would be tested. Their lives would be put on the line. And, despite Charlotte’s bravery, not everyone will come out alive.
Along the way, they will meet new friends – and adversaries – and never-before-seen creatures. They will be challenged with questions that strike to the heart of their mission and their very souls: What do you believe? Who do you care most about? ARE YOU WORTHY?
The answers await, but will not be easily discovered, even as the book itself seems always just out of reach. Within its pages lie the secrets to navigating the stars and curing deadly diseases, but can they retrieve it before they wind up dead themselves?