The movie starts at the 1998 bomb attack by the Real IRA at Omagh, Northern Ireland. The attack killed 31 people. Michael Gallagher one of the relatives of the victims starts an examination to bring the people responsible to court.
| Directing | Pete Travis | Director |
| Production | Greg Brenman | Executive Producer |
| Production | Mary Callery | Executive Producer |
| Production | Arthur Lappin | Executive Producer |
| Production | Andrew Lowe | Executive Producer |
| Production | Tristan Whalley | Executive Producer |
| Production | Paul Greengrass | Producer |
| Production | Ed Guiney | Producer |
| Production | Don Mullan | Producer |
| Camera | Donal Gilligan | Director of Photography |
| Editing | Clive Barrett | Editor |
| Production | Dan Hubbard | Casting |
| Production | Mary Maguire | Casting |
| Art | Julie Busher | Art Direction |
| Costume & Make-Up | Eimer Ní Mhaoldomhnaigh | Costume Design |
| Production | Mary Alleguen | Production Manager |
| Crew | Caroline McManus | Post Production Supervisor |
| Art | David Wilson | Production Design |
| Writing | Paul Greengrass | Writer |
| Costume & Make-Up | Eileen Buggy | Key Hair Stylist |
| Costume & Make-Up | Jennifer Hegarty | Makeup Artist |
| Costume & Make-Up | Fiona Hogan | Makeup Artist |
| Costume & Make-Up | Tina Phelan | Makeup Artist |
| Production | Brendan McCarthy | Executive Producer |
| Writing | Guy Hibbert | Writer |
| Visual Effects | Kevin Byrne | Special Effects Supervisor |
| Visual Effects | Harriet Donington | Visual Effects Producer |
| Visual Effects | Simon Frame | Visual Effects Supervisor |
| Production | Sarah Hanna | Casting Associate |
| Production | Rosanne Flynn | Researcher |
| Directing | Louise Gaffney | Script Supervisor |
| Camera | Ciarán Tanham | Camera Operator |
| Camera | Patrick Redmond | Still Photographer |
| Art | Rory Bruen | Assistant Art Director |
