Guest Stars Catherine Walker as Alice O'Brien Colin O'Donoghue as Conor Elliot Isobel Mahon as Bernie McMahon Mark Huberman as Kieran Miller Hilary Reynolds as Aideen Boylan Darragh Kelly as Niall Boylan Keith McErlean as Adam Darren Healy as Richie Sweeney Cara O'Sullivan as Lorna Boylan Laura Way as Emer Blackman Eleanor Methven as Dervla Rogers Siobhán Cullen as Kristen Ingrid Craigie as Maureen Elliot Frank Melia as Brendan Muldoon Kate Kenny as Lena Muldoon