| Episode cast overview, first billed only: |
 | Leigh Arnold | - | Caitríona French |
 | Nora-Jane Noone | - | Aoife Stacey |
 | Vincent Walsh | - | Andrew Stacey |
 | Conor Mullen | - | Jack French |
 | Roisin O'Neill | - | Emma Walsh |
| Danny McColgan | - | Troy Baker |
| Garrett Phillips | - | Detective O'Neill (as Garret Phillips) |
 | Sam Lucas Smith | - | Michael Joyce (as Sam Smith) |
 | Jim Norton | - | Larry Joyce |
| Helen Roche | - | Rose Joyce |
| Gavan O'Connor-Duffy | - | Owen French (as Gavin O'Connor-Duffy) |
| Paul McCloskey | - | Gerry (as Paul McCluskey) |
| Cora Fenton | - | Colleen Walsh |
| Michael Power | - | Conor Grimes |
| Rachel Brady | - | Niamh |
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