Episode 5 S01 E05

Ian Kenny (as Garda Phelan) Sam Keeley (as Daniel March) Barry O'Connor (as Cathal Mills) Moe Dunford (as Detective Sam O'Neill) Kathy Monahan (as Margaret Devlin) Tom Vaughan-Lawlor (as Detective Frank Mackey) Eugene O'Hare (as Detective Quigley) Conleth Hill (as Superintendent O'Kelly) Killian Scott (as Detective Robert 'Rob' Reilly) Leah McNamara (as Rosalind Devlin) Peter McDonald (as Jonathan Devlin) Amy Macken (as Katharine 'Katy' Devlin / Jessica Devlin) Sarah Greene (as Detective Cassandra 'Cassie' Maddox)

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