Darren O'Shaughnessy, who commonly writes under the pen name Darren Shan, is an Irish author. Darren Shan is the main character in Shan's The Saga of Darren Shan young-adult fiction series. He also wrote The Demonata series as well as the stand-alone books, Koyasan and The Thin Executioner. The City Book Trilogy was written for older, adult readers. He has also written The Saga of Larten Crepsley which is based on The Saga of Darren Shan. He is currently publishing a new 12 novel series "Zom-B". The first book went on sale in September 2012, and the books are being released every three months, with the final book scheduled to see print in summer 2015.