 | Thora Birch als Karen Clarke / Susan Hamilton |
 | Toby Stephens als Dr. Woodleigh |
 | Christien Anholt als David Hamilton |
 | Joanna Hole als Elaine Jordan |
 | Jonny Coyne als Priest 2 |
 | Lorraine Bruce als Mary Sullivan |
| Ray Charleson als Mr. Kyrke-Smith |
| Alan Perrin als Detective Jackson |
 | Michael J. Reynolds als Dr. Richardson |
 | Glenn Beck als Mr. Saunders |
 | Ian Porter als News Anchor |
| Sarah Whitefoot als Jennifer Landau |
| Sheryl Gannaway als Judith Palmer |
| Ray Gower | Director |
| Ray Gower | Writer |
| Nigel Thomas | Producer |
| Lisa Essary | Casting |
| Francesca Callow | Art Direction |
| Blair Jollands | Sound Effects Editor |
| Tim Keates | Production Design |
| Rick Woollard | Steadicam Operator |
| Kate Plantin | Casting |
| Katie Hillyer | Costume Supervisor |
| Andrew Pearce | Music |
| Colette King | Makeup Artist |
| Alison Rainey | Makeup Artist |
| Dan Fontaine | Gaffer |
| Anya Noakes | Unit Publicist |
| Peter Maxwell | Sound Re-Recording Mixer |
| Toby Jacobs | Still Photographer |
| Kriss Landin | Script Supervisor |
| Mike Baldock | Location Manager |
| Paul Sadourian | Director of Photography |
| Simon Willcox | Editor |
| Charlotte-Rose Kay | Costume Design |
| Matthew Hobbs | Production Supervisor |
| David Shillingford | Camera Operator |
| Keith Tunney | Sound Editor |
| Lex Milloy | Stunt Coordinator |
| Charlie Harvey | Editor |
| Tim Keates | Art Direction |
| Felicity Leabeater | Production Manager |
| Veronique Keys | Hair Designer |
| Veronique Keys | Key Makeup Artist |
| Alison Rainey | Special Effects Makeup Artist |
| Simon Rose | Special Effects Makeup Artist |
| Camise Oldfield | Art Department Assistant |
| Lewis Peake | Art Department Assistant |
| Andrea Porteous | Property Master |
| Jude Kerr | Set Dresser |
| Richard Jones | First Assistant Director |
| Nick Simmonds | Second Assistant Director |
| Darren Price | Third Assistant Director |
| Claire Hardaker | Costume Assistant |
| Gareth John | Sound Recordist |
| Ted Swanscott | ADR Mixer |
| Nick Foley | ADR Recordist |
| Felix Hawkin | Boom Operator |
| Tom Montgomery | Sound Mixer |
| Steve Cook | Sound Supervisor |
| Frederic Gibert | Sound Post Production Coordinator |
| Matthew Roach | Camera Loader |
| Andy Bell | Electrician |
| Fred Todd | Electrician |
| John Patterson | Focus Puller |
| Dave Wells | Grip |
| Ben Hall | Special Effects |
| Simon Bourne | Digital Colorist |
| Julie Dunne | Additional Casting |
| Sheryl Gannaway | Casting Assistant |
| Alan Maiden | Online Editor |
| David Walter | Music Programmer |
