Charlotte has spent her whole life fighting the British Empire, following in the footsteps of her parents and their group of rebels. But when her reunion with her mother laid bare horrible truths about the rebellion, Charlotte knew she had to escape. Now she is on the run, with no idea who the enemy is—or which of her compatriots is truly on her side. In this action-packed conclusion to the Inventor's Secret trilogy, full of swashbuckling pirates and young ladies who can hold their own against them, Charlotte will need to fight for her life and for her beliefs — whatever they might be.