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