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 | Ed Guiney | Producer |
| Crew | Caroline McManus | Post Production Supervisor |
| Production | Arthur Lappin | Executive Producer |
| Production | Paul Greengrass | Producer |
| Art | Julie Busher | Art Direction |
| Production | Mary Callery | Executive Producer |
| Production | Andrew Lowe | Executive Producer |
| Production | Mary Maguire | Casting |
| Production | Mary Alleguen | Production Manager |
| Production | Don Mullan | Producer |
| Camera | Donal Gilligan | Director of Photography |
| Editing | Clive Barrett | Editor |
| Production | Dan Hubbard | Casting |
| Costume & Make-Up | Eimer Ní Mhaoldomhnaigh | Costume Design |
| Production | Tristan Whalley | Executive Producer |
| Production | Greg Brenman | Executive Producer |
| Art | David Wilson | Production Design |
| Writing | Paul Greengrass | Writer |
| Costume & Make-Up | Tina Phelan | Makeup Artist |
| Costume & Make-Up | Fiona Hogan | Makeup Artist |
| Costume & Make-Up | Eileen Buggy | Key Hair Stylist |
| Costume & Make-Up | Jennifer Hegarty | Makeup Artist |
| Production | Brendan McCarthy | Executive Producer |
| Directing | Louise Gaffney | Script Supervisor |
| Visual Effects | Kevin Byrne | Special Effects Supervisor |
| Art | Rory Bruen | Assistant Art Director |
| Visual Effects | Simon Frame | Visual Effects Supervisor |
| Visual Effects | Harriet Donington | Visual Effects Producer |
| Camera | Ciarán Tanham | Camera Operator |
| Camera | Patrick Redmond | Still Photographer |
| Writing | Guy Hibbert | Writer |
| Production | Rosanne Flynn | Researcher |
| Production | Sarah Hanna | Casting Associate |
