Guest Stars Katelyn Rose Downey as Caitlin Mohan Aidan McCann as Niall Mohan Aoibhéann McCann as Katie Ryan Rhys Mannion as Derek Mohan Grace Collender as Doireann Carrick Nathara Dayananda as Emma Wilson Robert Mitchell as Detective Ames Benjamin Bergin as Billy Ryan Roisin Rankin as Aelish Flaherty Orla Casey as Eileen (Housekeeper) Steve Gunn as Commissioner Garret Oscar Nolan as Logan Seán Duggan as Garda Pat O'Connor Tristan Heanue as Freddie Vee Joe Rooney as Mr. Sweeney (Bus Driver) Caoimhe O'Malley as Pam Wilson Killian Donnelly as Brian Carrick Cabrina Conaty as Teaching Assistant Áine Ní Laoghaire as Gabby Chamberlain-Waugh Alan O'Brien as Sketch Artist
