Guest Stars Simon O'Gorman as Billy Flanagan Mark Huberman as Kieran Miller Hilary Reynolds as Aideen Boylan Sophie Wasson as Madison O'Brien Darragh Kelly as Niall Boylan Keith McErlean as Adam Cara O'Sullivan as Lorna Boylan Laura Way as Emer Blackman Juliette Gash as Felicity Brid Ní Chumhaill as Vicki