The Exorcist has terrified audiences since 1973, but few know the story is true. For the first time on television, investigators expose shocking secrets about the real-life exorcism of a 13-year-old boy that inspired an iconic horror film.
| Actor | Role |
|---|---|
| JJeff BelangerSelf | Self |
 Anthony D. CallNarrator | Narrator |
| KKendall ChappellMary Doe | Mary Doe |
 Caden ConriqueRoland Doe | Roland Doe |
| DDavid ConriqueRoland's Dad | Roland's Dad |
| TTerry CooperSelf | Self |
 Troy DillingerReverend Schulze | Reverend Schulze |
| LLynda GatlinAunt Tillie | Aunt Tillie |
| LLaurene GomezSelf | Self |
 David HillFather Bishop | Father Bishop |
| KKenneth JonesDiary Voice | Diary Voice |
| DDevon JuaireFather Halloran | Father Halloran |
| SSteven LaChanceSelf | Self |
| VVincent LampertSelf | Self |
| LLindsey MallardRoland's Aunt | Roland's Aunt |
| SSteven P. NemphosFather Holewinski | Father Holewinski |
| DDan OlsenFather Hughes | Father Hughes |