Twin Daggers

By day, Aissa and Zandra play the role of normal young Technocrats eager to fulfill the duties of their new apprenticeships. By night, they plot their revenge to retake their city. But then Aissa is given a new mission: find and kidnap the heir to the Technocrat throne, a person who has been hidden since birth and is rumored to be one of the Heartless--an individual born without a working heart who survives via a mechanical replacement. Aissa is more likely to be caught than to be successful, but she's never been one to turn down an assignment, even if the hunt is complicated by a kind Technocrat researcher who is determined to find a cure for the Heartless. But when Zandria is captured by the Technocrats, Aissa will do anything to get her sister back--even if it means abandoning all other loyalties and missions...and risking everything by trusting her sworn enemies.