The Riddle of Zorfendorf Castle (The Secrets of Droon #25)
Tony Abbott is the author of more than ninety books for young readers, including THE SECRETS OF DROON series; middle-grade novel KRINGLE; and THE HAUNTING OF DEREK STONE series.  He was the recipient of the 2006 Golden Kite Award, as well as the 2009 Edgar Award.  Tony was born in Ohio, and now lives with his wife and two daughters in Trumbull, Connecticut.  Visit him online at www.tonyabbottbooks.com.