Guest Stars Ellie O'Halloran as Jamie Rowan Niall Jordan as Peter Savage Michael D'Arcy as Adam Amy Macken as Jessica Devlin Kathy Monahan as Margaret Devlin Barry O'Connor as Cathal Mills Amelia Crowley as Clare Hogan Eunice McMenamin as Alicia Rowan Amy Macken as Katy Devlin Mark Byrne as John Reilly Shereen Martin as Sophie Miller Paul Roe as Vincent Johnstone James Browne as Shane Waters Caoimhe O'Malley as Heather Barbara Brennan as Mrs. Fitzgerald Ericka Roe as Alannah Shorey Florence Ordesh as Mel Royce Abe Smyth as Technician Conor O'Dwyer as Young Garda John Delaney as Lawyer Christopher McHallem as Headmaster Killian Coyle as Cian Fox Luke O'Donoghue as Boy Neighbour Karen Rush as TV Journalist Michael Johnston as Civil Defence Volunteer