Guest Stars Barry McGovern as Dr. James Whelan Lisa Hogg as Emma Riley Jade Jordan as Donna Walsh Seán T. Ó Meallaigh as Jack Lucey Lloyd Hutchinson as Supt. Shanahan Andrew Bennett as Donal Riley Hannah James-Scott as DG Angela Webster Orla Charlton as Deirdre McGuire Mae Higgins as Young Fia Brendan Conroy as Fergus Slattery Ally Ní Chiaráin as Sandra Riley Ingrid Craigie as Marjorie Whelan Senan Jennings as Aidan Lucey Gerard Meehan as Shane Furlong Siobhán O'Kelly as Elizabeth Lucey Clara Fitzgerald as Róisín Hurley Gwynne McElveen as Dr. Myreen Burgess