Guest Stars Seamus O'Hara as Mackers (Belfast Project) Judith Roddy as Jean McConville Ryan McParland as Jimmy Dooley Amy Molloy as Private Sarah Jane Martin McCann as Wee Pat Adam Best as Joe Lynskey Co Starring Emily Healy as Helen McConville Rylee Neilly Large as Michael McConville Art Parkinson as Francis Isaac Heslip as Archie McConville Conor Trainor as Jim McConville Matthew Murphy as Billy McConville Lennox Loughran as Tucker McConville Ava-Rose Gallagher as Agnes McConville Cùàn Hosty-Blaney as Chalkie Sarah Gordon as Susie McConville Bernadette Brown as Intruder Two Jack Myers as Elliot Warren Rusher as Intruder One Lloyd Hutchinson as Dáithí Simon Kunz as Philip John Woodfield Jonathan Aris as Frank Steele Megan Cusack as Colette Ian Beattie as Seán Mac Stíofáin Gerry Cannon as Peadar Drew Dillon as Man with Baby Bea Holland as Secretary Gráinne O'Mahony as Young Secretary Will Pattle as Border Soldier Nicholas Murchie as William Whitelaw Paul Tinto as Officer Two Bill Jones as Ian Eddie Elks as Officer Three Archie Chapman as Kid with Bin Lid Liam Wheeler as Wounded British Soldier Keir Edkins O'Brien as Teenager
