Darren O'Shaughnessy (; born 2 July 1972), who commonly writes under the pen name Darren Shan, is an Irish author. Darren Shan is the main character in O'Shaughnessy's The Saga of Darren Shan young adult fiction series, also known as the Cirque Du Freak series in the United States. He followed that up with The Demonata series and the stand-alone books, Koyasan and The Thin Executioner. Then came The Saga of Larten Crepsley which is a prequel to The Saga of Darren Shan and tells the life of Larten Crepsley. He has most recently finished a 12 novel series "Zom-B". The first book, Zom-B, went on sale in September 2012, with the final book, Zom-B Goddess, published on April 2016. Darren also writes for adults, and has published The City Book Trilogy and Lady of the Shades under the name of Darren Shan, and The Evil and the Pure, Sunburn, An Other Place and Midsummer's Bottom under the name of Darren Dash.