The Sharing Society, Book 4: Volume 2 (Library Binding) (ISBN-13: 9781577156703)

Cast uses her science skills in a battle within the mines as she faces her first foe without Ms. Clock backing her up. With the help of Otto, she is able to defeat her opponent and save Otto's son.

However, the battle has set off the unstable crystals in the mine, making an explosion imminent. Otto shows Cast a secret way into the castle, so bruised but determined, Cast sets off ready to save Ms. Clock, Klaus, and the rest of the citizens. In the castle, she quickly runs into the Demon Bandit Loki who seems to be working with Klaus and finds there are a lot more Klauses to rescue than she originally thought. Will Cast be able to save her friends in the castle and stop the explosion from wiping out the kingdom?