Pikey Thomas doesn't know how or why he can see the changeling girl. But there she is. Not in the cold, muddy London neighborhood where Pikey lives. Instead, she's walking through the trees and snow of the enchanted Old Country or, later, racing through an opulent hall. She's pale and small, and she has branches growing out of her head. Her name is Henrietta Kettle. Pikey's vision, it turns out, is worth something. Worth something to Hettie's brother...

Cerise Mar and her unruly clan are cash poor but land rich, claiming a large swathe of the Mire, the Edge swamplands between the state of Louisiana and the Weird. When her parents vanish, her clan's long-time rivals are suspect number one. But all is not as it seems. Two nations of the Weird are waging a cold war fought by feint and espionage, and their conflict is about to spill over into the Edge and Cerise's life. William, a changeling soldier...

Sixteen-year-old Mackie Doyle knows that he replaced a human child when he was just an infant, and when a friend's sister disappears he goes against his family's and town's deliberate denial of the problem to confront the beings that dwell under the town, tampering with human lives.

"At age twelve, grave robber Thomas Marsden discovers a boy who looks just like him in an unmarked grave and begins a journey of discovery as he learns of faeries trapped in London and their hope that he can return them to their realm." Provided by publisher.