Guest Stars Siobhán Cullen as Morgan Sean McGinley as Terry Aoibhínn McGinnity as Crystal Jane Brennan as Gemma Jonny Holden as Callum Amelie Metcalfe as Mary Ciarán McMenamin as McGlynn Olivia Feron as Madeline Marty Maguire as Builder Skye McClenaghan as Orla Dylan Breen as David Joanne Crawford as Callum's Doctor Patrick Fitzsymons as Judge Aaron Lynch as Attacked Boy Derbhle Crotty as Superintendent Michael Yare as Solicitor Julia Dearden as Dolores Chrissie Harris as Christmas Reveler