Guest Stars Michael D'Arcy as Adam Niall Jordan as Peter Savage Ellie O'Halloran as Jamie Rowan Amy Macken as Jessica Devlin Kathy Monahan as Margaret Devlin Barry O'Connor as Cathal Mills Amy Macken as Katy Devlin Caoimhe O'Malley as Heather James Browne as Shane Waters Barbara Brennan as Mrs. Fitzgerald