Guest Stars Simon O'Gorman as Billy Flanagan Tomás Ó Súilleabháin as Ronan Donaghue Colin O'Donoghue as Conor Elliot Orla O'Rourke as Sinead Kelly Isobel Mahon as Bernie McMahon Róisín Murphy as Rhiannon Geraghty Garrett Keogh as Martin Geraghty Chris Newman as Barry Geraghty Melanie Clark-Pullen as Ann Marie Emmet Bergin as Frederick Delaney Joanne Crawford as Ros Keogh Suzanne Lakes as Mrs. Mangan Arthur Dunne as Mr. Casey