Kieran O'Reilly is a real-life police detective who worked for many years as an undercover drugs operative. He arrived onto the acting scene in 2013 with a critically acclaimed performance in Ireland's television crime drama, Love/Hate (2010). He was nominated for the 'Discovery Award' at the Dublin International Film Festival 2016. He is also known for Vikings (2013) and is the singer/songwriter of the Irish alternative band, Hail The Ghost.