 | Arielle Kebbel als Catherine |
 | Sarah Carter als Kim |
 | Stephen Dillane als Dr. Harris |
 | Andrew-Lee Potts als Kenneth |
 | Alex Wyndham als Jake |
 | Katie McGrath als Harriet |
 | Christina Chong als Yoshimi |
 | Martin Compston als Sean |
 | Michael Jibson als Steve |
 | MyAnna Buring als Shelby |
 | Colin Stinton als Detective Cartert |
 | Nick Hardin als Walt |
 | Michael J. Reynolds als Dr. Stegman |
 | Art Parkinson als Young Kenneth |
| Bronagh Taggart als Kenneth's Mother |
| Paddy Breathnach | Director |
| Spence Wright | Writer |
| Mark Huffam | Producer |
| Hazel Webb-Crozier | Costume Design |
| Gail Stevens | Casting |
| Ruairi O'Brien | Director of Photography |
| Kelly Valentine Hendry | Casting |
| Michael Kelly | Producer |
| Stephen Warbeck | Music |
| 'Kis Gromek' László Molnár | Best Boy Electric |
| Anna McCaughtry | Set Dresser |
| Terry McDonald | Boom Operator |
| Colin Holmes | Set Dresser |
| Sharon Lock | Title Designer |
| Peter Lindsay | Production Sound Mixer |
| Lynne Davison | Assistant Camera |
| Alex Hudd | Dolby Consultant |
| Steve Parsons | Digital Compositor |
| Pietro Dalmasso | Dialogue Editor |
| Aisling Toner | Makeup Artist |
| Dave McMahon | Foley Recordist |
| Nick Morton | Special Effects Supervisor |
| Nicola Quinn | Boom Operator |
| Stan Fiferman | Foley Artist |
| Niall McEvoy | Art Department Assistant |
| Sean Danischevsky | Digital Compositor |
| Duncan Burbidge | Visual Effects Producer |
| Mark L. Cowden | Epk Camera Operator |
| Esme Long | Digital Intermediate Producer |
| Mark Fitzpatrick | Foley Recordist |
| Ken Galvin | Sound Re-Recording Mixer |
| Kevin McCabe | Property Master |
| Thayna McLaughlin | Sound Assistant |
| Norbert Csontos | Electrician |
| Naomi Cripps | Makeup Artist |
| Tom Partridge | Visual Effects Editor |
| Mark Nelmes | Visual Effects Supervisor |
| David Craig | Production Design |
| Dermot Diskin | Editor |
| Susie Redfern | Prosthetic Makeup Artist |
| James Long | Digital Intermediate |
| Dominic Weaver | Supervising Sound Editor |
| Paul Jennings | Stunt Coordinator |
| Helen Sloan | Still Photographer |
| Paul Englishby | Conductor |
| Istvan Bolla | Gaffer |
| Paul Clarvis | Musician |
| Ryan Marshall | Transportation Captain |
| Tim Harris | Musician |
| David McAnulty | Key Grip |
| Ruth Woodside | Second Assistant Camera |
| Becky Bentham | Music Supervisor |
| David Walter | Music Programmer |
| Kerry Gooding | Assistant Costume Designer |
| Stephen O'Rawe | Key Costumer |
| John Parricelli | Musician |
| Michelle Burns | Assistant Production Coordinator |
| Lisa Creaney | Assistant Editor |
| Alan Crozier | Transportation Captain |
| Katrina McBriarty | Assistant Production Coordinator |
