Guest Stars Pippa Haywood as Scarlett Garretson Chris Reilly as William Stroud Patrick Bergin as Niall Walsh Colin Mace as Terry Garretson Elena Shaddow as Kathryn O'Brien Conor Lambert as Padraig McEwan Brady Hepner as James O'Brien Co Starring Stefan Trout as Ernesto Saunders Sarah Junillon as Claire Armbruster Eric James Gravolin as Kyle Cartwright Mario Vrbanec as Brennan O'Doherty László Solti as Father Ian Crowley Eoin Sweeney as Young Activist Olivér Simor as Bartender Tommy Marta Breen as Myra Boyle Kiran Landa as Inspector Margaret Mullins Matt Sutton as Alec O'Brien Cian Barry as Sullivan Archer