du Freak, the first book of The Saga of Darren Shan series in the United Kingdom and Ireland. The series was a huge global success and by 2021 his books were on sale in 40 countries, in 32 languages, and had sold thirty million copies worldwide. O'Shaughnessy signed up with the Christopher Little Literary Agency in 1996 and they continued to represent him until Christopher Little's death in 2021. He is now represented by the Curtis Brown Agency. Personal life O'Shaughnessy continues to live in Pallaskenry in Limerick, Ireland with his wife Helen Basini, a freelance university lecturer and global aid specialist. On 23 September 2014, the couple celebrated the birth of their first child, Dante, named after the famous Italian author. Shan and his wife Helen welcomed their second child, a daughter named Gaia, on 26 March 2019. Books The Saga of Larten Crepsley This is a four-book series covering 200 years in the life of Larten Crepsley, a vampire first introduced to readers in The Saga of Darren Shan. Birth of a Killer. Released in the UK and US in October 2010. Ocean of Blood. Released in UK and US in April 2011. Palace of the Damned. Released in UK and US in September 2011. Brothers to the Death. Released in UK and US in April/May 2012. The Saga of Darren Shan Also known as Cirque Du Freak series. Vampire Blood Trilogy Cirque Du Freak () The Vampire's Assistant (/) Tunnels of Blood () Vampire Rites Trilogy Vampire Mountain () Trials of Death () The Vampire Prince () Vampire War Trilogy Hunters of the Dusk () Allies of the Night () Killers of the Dawn () Vampire Destiny Trilogy The Lake of Souls () Lord of the Shadows () Sons of Destiny () The Demonata Bec Demon Thief Lord Loss Slawter Blood Beast Demon Apocalypse Death's Shadow Wolf Island Dark Calling Hell's Heroes The City Trilogy The City Trilogy was written for adult readers and was originally released under O'Shaughnessy's own name. The third book was never published and the original versions are now out of print. They were published by Orion Publishing Group. However, in March 2008, Ayuamarca was re-published as Procession of the Dead (with substantial changes) by the Voyager imprint of HarperCollins (O'Shaughnessy's children's publisher). Hell's Horizon was released in March 2009 and City of the Snakes was released in March 2010. All three books