Guest Stars Catherine Walker as Alice O'Brien Simon O'Gorman as Billy Flanagan Tomás Ó Súilleabháin as Ronan Donaghue Isobel Mahon as Bernie McMahon Mark Huberman as Kieran Miller Keith Duffy as Paul Dunne Olga Wehrly as Molly Miller Eleanor Methven as Dervla Rogers Siobhán Cullen as Kristen Deirdre Donnelly as Carol O'Dwyer Eamonn Draper as Charlie Olivia Shanley as Enid Simon Keogh as Max Seán Duggan as Simon Macdara Ó Fátharta as Tom O'Dwyer Mary Jordan as Yvonne John Sheahan as Paediatrician Louise Rafferty as Midwife Cormac Costello as Arrest Leader