In September 2007, Peadar Ó Guilín published his first novel, "The Inferior", which the Times Educational Supplement called "a stark, dark tale, written with great energy and confidence and some arresting reflections on human nature." Foreign editors liked it too, and over the following years, it was to be translated into numerous languages from Turkish to Korean.

His second novel, "The Deserter" is a direct sequel to "The Inferior" and received its first outing on 5th May 2011 in the UK and Ireland. It was published in North America in March 2012.

Peadar's fantasy and SF short stories have appeared in numerous venues, including "Black Gate" magazine and an anthology celebrating the best of the iconic "Weird Tales". He is currently working on "The Volunteer", the third and final novel of the trilogy that began with "The Inferior".

In May 2015, Random House will be publishing his near-future dystopian detective novel, "Eat the Drink".

Peadar currently lives in Dublin, where he toils day and night for a giant computer corporation.