* "The Uncrowned King" (2013)
* "The Serpent Queen" (2015)
* "The Dragon Throne" (2017)
* "The White Wars" (2018)
* "The Red Winter" (2019)
Non-Fiction:
* "History of the Kings and Queens of Ireland" (2010)
* "The Celts: A History" (2012)
* "The Vikings in Ireland" (2014)
* "The Norman Invasion of Ireland" (2016)
* "The Tudors in Ireland" (2018)