Science and magic mean danger in this sequel to The Unnaturalists, which School Library Journal called “an entertaining mix of steampunk and fantasy.” After Vespa, Syrus, and Bayne defeated the Grue and restored order to their world in The Unnaturalists, they thought their future was secure. Empress Olivia, committed to peace and equality for humans and Elementals alike, was a fair and just ruler. And the Creeping Waste had vanished, giving them hope for the first time. But rebellion is brewing in the far-off city of Scientia, and dark Elementals are plotting war in the ruins of New London. Before they know what’s happening, Vespa, Syrus, and their friends are plunged into a new swamp of intrigue, deception and magic—and the cost of survival may be more than any of them are willing to pay.**

In an alternate London where magical creatures are preserved in a museum, two teens find themselves caught in a web of intrigue, deception, and danger. Vespa Nyx wants nothing more than to spend the rest of her life cataloging Unnatural creatures in her father's museum, but as she gets older, the requirement to become a lady and find a husband is looming large. Syrus Reed's Tinker family has always served and revered the Unnaturals from afar, but when his family is captured to be refinery slaves, he finds that his fate may be bound up with Vespa's — and with the Unnaturals.  As the danger grows, Vespa and Syrus find themselves in a tightening web of deception and intrigue. At stake may be the fate of New London — and the world.