Dr. Malachi made "siblings" Jin and Delilah of clockwork and spare parts-human and otherwise. They have one purpose: to assassinate Queen Rowena so Dr. Malachi can profit from the war that will surely follow. When Jin discovers Dr. Malachi's plans, he runs away, but to his despair he must leave Delilah behind.Life in the outside world is terrifying. Jin has never been away from his creator's estate and can barely pass for human. And now Dr. Malachi's other creations-mechanical men and zombies-have picked up his trail. On the run, Jin crashes through young mechanic Molly Feldman's roof; she sees the humanity beneath the metal and decides to hide him, but soon Malachi's creatures are after her, too.If Jin doesn't rescue his "sister" Delilah, she'll be forced to assassinate the Queen or die in the attempt. He needs Molly's help, but if she finds out he was built for the same purpose, it may be the end for Delilah and Jin both.