Guest Stars Dominic MacHale as Sergeant Healy Demi Isaac Oviawe as Linda Walsh Jennifer Barry as Siobhan Walsh P.J. Gallagher as Principal Barry Walsh Orla Fitzgerald as Orla Walsh Shane Casey as Billy Murphy Ciaran Bermingham as Garda Quinn Robert Sheehan as Himself Paul Boyle as Tough Resident John O'Donavon as Take-Out Customer Ruby Grace as Girl Resident April Kelly as Defiant Woman Donal O'Shea as Garda Jason O'Connor as Friendly Male Resident Paddy McCarthy as Boy on Horse Lloyd Creagh as Robert Sheehan's Driver Stacey O'Flynn as Sick Kid Oscar Ryan as Sick Kid Louie Ryan as Sick Kid Beth Hanrahan as Sick Kid Norin Kelleher as Female Patient in Corridor Derek Devoy as Kind Man with Patient Marian Harrington as Female Patient on Drip Jack Healy as Crying Man Frank Twomey as Lonely Patient in Ward Pauline O'Driscoll as Hospital Consultant Stephen O'Connell as Paramedic Katelyn O'Connell as Defiant Woman's Daughter Paschal Sheehy as RTÉ News Reporter Malua Ní Chléirigh as Production Assistant Ailish Bracken as Production Manager Maura Long as Carol Singing Critic Ross Browne as Take-Out Delivery Guy Con O'Connor as Male Patient Outside Hospital Ann Gibbs as Female Patient in Bed Colin Murphy as Taxi Driver David Fynn as Turkey Thief