On Friday, Sept. 26th at 7:00 PM, The Niles Public Library (6960 West Oakton St. in Niles, IL) welcomes best-selling authors Holly Black (The Spiderwick Chronicles) and Cassandra Clare (Mortal Instruments) as they introduce their first collaboration: The Iron Trial, the first in a five-book magical adventure series, The Magisterium. The authors will discuss their work and the process of writing together, answer questions, and autograph copies of their work. This program is co-sponsored by The Book Stall, an independent bookstore based in Winnetka, IL. Recommended for readers ages 9 and up, this event is free and open to the public. For more information, contact the Library at 847-663-6622.