Guest Stars Sophie Wasson as Madison O'Brien Liam Carney as Franny McGowan Paul Meade as Paul Brown Cathy Belton as Terri McGowan Iseult Golden as Gareth Doyle Feidlim Cannon as Anthony Carrie Crowley as Melanie Grimes Aidan Jordan as Derek Boylan Charlie Murphy as Natasha Halpin John Kavanagh as Simon Lund Pooky Quesnel as Sue Murdoch Percy Pennyfeather as Researcher Sarah O'Sullivan as Solicitor Aisling McLaughlin as Jane Shore Jac Mordaunt as Karl Shore Niamh McGuire as Solicitor John Smith as Gerald White Colm Mackinyosh as Paul Coleman Miles Purcell as Arthur Davids Paul McCarthy as Frank Taylor