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