| Robert Downey Jr. | Dan Dark |
| Robin Wright Penn | Nicola / Nina / Blonde |
| Mel Gibson | Dr. Gibbon |
| Jeremy Northam | Mark Binney |
| Katie Holmes | Nurse Mills |
| Adrien Brody | First Hood |
| Jon Polito | Second Hood |
| Carla Gugino | Betty Dark / Hooker |
| Saul Rubinek | Skin Specialist |
| Alfre Woodard | Chief of Staff |
| Director | Keith Gordon |
| Producer | Bruce Davey; Mel Gibson |
| Writer | Dennis Potter |
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