The Iron Trial

Holly Black is the #1 New York Times bestselling author of the Spiderwick Chronicles (with Tony DiTerlizzi) and the Newbery Honor–winning book Doll Bones. Her other works include the Good Neighbors graphic novels, as well as The Darkest Part of the Forest, Valiant, and Ironside. She currently lives in the realm of western Massachusetts.

Cassandra Clare is the author of the #1 New York Times, USA Today, Wall Street Journal, and Publishers Weekly bestselling Shadowhunter Chronicles and the New York Times bestselling Sword Catcher. The Shadowhunter Chronicles have been adapted as both a major motion picture and a television series. Her books have more than fifty million copies in print worldwide and have been translated into more than thirty-five languages. Cassandra lives in western Massachusetts with her husband and four fearsome cats.