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 Niall O'Brien as Young Shane David Thomas as Young Cathal Daniel Brickenden as Young Jonathan Aoife Fitzpatrick as Young Sandra Amy Macken as Katy Devlin Seán Duggan as James Brice Áine Ní Laoghaire as Karen Aherne