The Secret of the Moonstone

Now back in Iron Kress, Ember, Ari, and Ophelia must trust each other if they're going to escape. Ember must deal with her upcoming nuptials and not to mention learning to control her newly discovered magic. With the lives of her friends in danger, can Ember manage palace life long enough to return to the sea where her heart remains safe with Sebastian on the Obsidian?
Her entire life, Ophelia knew two things. She would some day take over as queen for her mother and she could always trust he...