Guest Stars Aisling O'Sullivan as Dr. Cathy Costello Norma Sheahan as Fiona McColgan Tanya Moodie as Dr. Grace Sefate Mark Huberman as Kieran Miller Hilary Reynolds as Aideen Boylan Ryan Andrews as Ian Smith Darragh Kelly as Niall Boylan Cara O'Sullivan as Lorna Boylan Paul Meade as Paul Brown Steven Blount as Steve Roe Isobel Cuffe as Hope Miller David Sheehan as Vincent O'Shea Gordan Mahon as James Helen Carroll as Newsreader Brent Hearne as Private Detective Dorothy Cotter as Patient Donncha Crowley as Maurice Buckley Joshua Brown as Odhran McCreevy Noelle Brown as Cathleen Buckley Jenn Murray as Sorina Larissa Kouznetsova as Nino Tiku Gillian Oman as Donna McCreevy Georgina Miller as Nurse Keating