Into the Gauntlet (the 39 Clues, Book 10)

Margaret Peterson Haddix is the New York Times bestselling author of more than fifty books for kids and teens. She grew up on a farm in Ohio and worked as a newspaper reporter and copy editor in Indiana before her first book, Running Out of Time, was published. Since then, the books she has written include the Greystone Secrets series, the Shadow Children series, the Missing series, the Mysteries of Trash and Treasure series, and many stand-alones. Her books have been honored with an Edgar Allan Poe award and numerous state readers choice awards. Margaret and her husband, Doug, now live in Columbus, Ohio, where they raised their two kids. You can learn more about her at haddixbooks.com.