Special Guest Stars Mitch Pileggi as Ernest Darby Kenny Johnson as Kozik Paula Malcomson as Maureen Ashby Guest Stars David Labrava as Happy Lowman Michael Ornstein as Chuck Marstein Winter Ave Zoli as Lyla McNally Sagal as Margaret Murphy Jeff Kober as Jacob Hale Jr. Titus Welliver as Jimmy O'Phelan Jose Pablo Cantillo as Hector Salazar James Cosmo as Father Kellan Ashby Zoe Boyle as Trinity Ashby Bellina Logan as Fiona Larkin Andy McPhee as Keith McGee Arie Verveen as Liam O'Neill Joel Tobeck as Donny Q'Orianka Kilcher as Kerrianne Larkin-Telford Darin Heames as Seamus Ryan Michael Fairman as Lumpy Feldstein Dominic Keating as Luthor Barkwill Leo Fitzpatrick as Shepard Lorcan O'Toole as Padraic Telford Co Starring Marya Delver as Officer Candy Eglee Frank Potter as Eric Miles Tara Macken as Luisa Dan Hildebrand as Sean Casey Glenn Keogh as Michael Casey Matthew Alan as Mark Petrie Dinah Lenney as Sister Miriam Lilly McDowell as Katey Petrie Carla Jimenez as Clinic Admin Robert Neary as PSNI Lieutenant Jason McDonald as Geezer