The Saga of Darren Shan (known as Cirque du Freak: The Saga of Darren Shan in the United States) is a young adult 12-part book series written by Darren Shan (pen name of Darren O'Shaughnessy) about the struggle of a boy who has become involved in the world of vampires. As of October 2008, the book has been published in 33 countries around the world, in 30 different languages. A film based on the first three books in the series was released in theatres on October 23, 2009. Blackstone Audio has also released CD recordings of all 12 books in the series, read by Ralph Lister.