Guest Stars Simon O'Gorman as Billy Flanagan Tomás Ó Súilleabháin as Ronan Donaghue Orla O'Rourke as Sinead Kelly Marian Araujo as Marta Lopez Matthew Keenan as Sam Connolly Gabrielle Reidy as Meg Duffy Jane McGrath as Gillian Ryan Anne Byrne as Nora Ryan Charlotte Bradley as Sonia Harper Philip Judge as Eugene Andrew Keane as Brian Noonan Laine Megaw as Annie McKenna Ann O'Neill as Dee Noonan Lochlainn O'Mearáin as Estate Agent Sean O'Neill as Surgeon 2 Dan Reardon as Priest Wesley Murphy as Surgeon 1 Fiona Sinnott as Ruth McKinney Paddy C. Courtney as Mr. Goss