- Francis Magee - Bren Kinsella
- Öykü Karayel - Nuray Batuk
- Kenan Ece - Hamza
- Ryan Lincoln - Isaac 'Kem' Kemela
- Donncha Tynan - Dan Murphy
- Paul Tylak - Donal Crehan
- Aidan O'Hare - Father Deegan
- Cathal Pendred - Rory Hayes
- George Georgiou - Zehab Can
- Ger Carey - Beady Donovan
- Dane Whyte O'Hara - Zach Burke
- Peadar Cox - Benjamin Stokes
- Colleen Keogh - Doctor Jane Kelly
- Mark Lawrence - Young Male Doctor
- Daniel Parsons - Dayna Parsons
- Aine Flanagan - Louise Brady
- Claire O'Donovan - Judge
- Michael O'Kelly - Prosecution Barrister
- Hilary Vesey - Viking's Barrister
- Marie Ruane - Court Registrar
- Baz Black - Ged Delaney
- Matt Lenehan - Lee Reid
- Sinan Sicimoğlu - Teller
- Libby Dunne - Katie Wallace
- Aaron Katambay - Eddie Lucas
- John Dalessandro - Cian Dowling
- Fionnuala Murphy - Maisie Delaney
- Shane G. Casey - Paddy Hughes
- Ben Carolan - Glen Wright
- Eddie Jackson - Gary Mahor
- Eddie Jackson - Gary Mahon
- Lewis Brophy - Shane McGonigle
- Shauna Higgins - Jess Duggar
- Shauna Higgins - Jess Duggar (uncredited)
- Deirdre Molloy - Nellie Wright
- Eva-Jane Gaffney - Katlyn Hayes
- Owen Mulhall - Taxi Driver
- Ciara Bailey - Jimmy's Date
- Danny Kehoe - Tom Morrison
- Kyle Bradley Donaldson - Clayton Finn
- Carol O'Reilly - Duty Sergeant
- Donna Anita Nikolaisen - Estate Agent
- Paula McGlinchey - Pharmacist
- Haydar Köyel - Hazim Atkas
- Cara Christie - Crehan Receptionist
- Jack Walsh - Derek Ward
- Tony Doyle - Gary Wright
- Ericka Roe - Siobhan Wright
- Danielle Galligan - Pharmacist Molly
- Keith McErlean - Con Doyle
- Thommas Kane Byrne - Francis 'Fudge' Flynn
- Neill Fleming - David 'Dotser' Reid
- Anthony Morris - Keith Boylan
- Stephen Jones - Noel Lawlor
- Rachael Dowling - Claire Larkin
- Conor Mullen - Collie Larkin
- Nancy Onu - Nurse
- Louise McCann - Drug User
- Jade Jordan - Nellie Akanji
- Gwynne McElveen - Natasha Halpin
- Maura Foley - Woman
- Karen Killeen - News Reporter
- Denise McCormack - Jenny Lawlor
- Fiona Bell - Angela Cunningham
- Esosa Ighodaro - Detective Liz Cullen
- Aidan Jordan-Boodle - Father Scriven
- Owen Barton - Doctor Sam Rooney
- Karl Rice - Jason Doyle
- Bamshad Abedi-Amin - Cenk Batuk
- Slaney Power - Jane Cunningham
- Ruth McGill - Rhiannon
- Dylan Brady - Luke Cunningham
- Alan Howley - Prison Warden
Charlie Cox hace el papel de Michael Kinsella.
Aidan Gillen interpreta a Frank Kinsella en la serie.
Clare Dunne interpreta a Amanda Kinsella en la serie.
Maria Doyle Kennedy hace el papel de Bridget 'Birdy' Goggins.
Emmett Scanlan interpreta a Jimmy Kinsella en la serie.
Sam Keeley interpreta a Eric 'Viking' Kinsella en la serie.
Yasmin Seky hace el papel de Nikita 'Nikki' Kaye.
Francis Magee interpreta a Bren Kinsella en la serie.
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