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 Trevor Kaneswaran as Matt Wilson Kevin Trainor as Martin Kelly Roisin Rankin as Aelish Flaherty Orla Casey as Eileen (Housekeeper) Oscar Nolan as Logan Breffni Clack voices Radio Presenter Tara Cooney Maeron Libomi as Luke Caitriona Ennis as Mary Ailbhe Cowley as Zelma Permeti Evan Crimmins as Tony Aoife Ní Fhaoláin as Crime Scene Technician Emily Godson as Bank Employee