Guest Stars Frankie McCafferty as Barney Nugent Desmond Eastwood as DS Murray Canning Gerard Jordan as Anto Donovan Matthew Forsythe as Aodhan McAllister Art Campion as Sully Nabil Elouahabi as Joseph MI5 Aoibhéann McCann as Geraldine Gilroy Clare Gray as Rachel MI5 Stefan Boehm as Mark Blundell Declan Lawn as News Reporter Vanessa Ifedoria as Assistant to Nicola Robinson