"Mediator #1: Shadowland" by Meg Cabot is a young adult fiction book published by HarperCollins in 2004. This trade paperback edition is part of the Mediator Series and features a captivating storyline that combines elements of romance, paranormal, and thriller genres. With 304 pages, the book is filled with ghost stories, contemporary romance, and thrilling suspense, making it a compelling read for young readers. The author's vivid writing and engaging plot keep readers on the edge of their seats, making it a must-read for fans of the genre.