Infernal Devices begins as any solid next book in a series should. It continues on from where the last book left off. Several years after Predator's Gold Tom and Hester have a daughter. And she naturally grows bored with the placid nature of life in the hidden wilderness of America. As a result she ends up plunging Tom and Hester into another whirlwind adventure that continues their adventures with old adversaries and some new ones. In short this really is a brilliant continuation of a creative young adult science fiction series.