Perfect fit for fans of Margaret Peterson Haddix, Kate Messner's new adventure blends cutting-edge science, thrilling mystery, and heart-pounding action.

Four kids . . .
Two weeks in the Florida Everglades . . .
One top-secret science experiment that could change them and the world as they know it . . .

Meet Quentin, a middle-school football star from Chicago; Sarah, a hockey player from Upstate New York; Ben, a horse lover from the Pacific Northwest; and Cat, an artistic bird watcher from California.

The four have little in common except the head injuries that landed them in an elite brain-science center in the wild swamps of Florida. It’s known as the best clinic in the world and promises to return their lives to normal, but as days pass, the kids begin to notice strange side effects and unexplained changes.
KATE MESSNER is a former middle-school English teacher and the author of E. B. White Read Aloud Award-winner The Brilliant Fall of Gianna Z., Sugar and Ice, Eye of the Storm, a 2013 NSTA-CBC Outstanding Science Trade Book, Capture the Flag, the Marty McGuire chapter book series, and two picture books, Seamonster’s First Day and Over and Under the Snow. She lives on Lake Champlain with her husband and two kids. When she’s not reading or writing, she loves hiking, kayaking, biking, and watching thunderstorms over the lake.