 | Sabrina Kern als Mary / Agatha |
 | Carolyn Hennesy als Mother Superior |
 | Courtney Halverson als Catherine |
 | Seth Michaels als Father Andrew |
 | Trin Miller als Paula |
 | Lindsay Seim als Doris |
 | Jayson Warner Smith als Mary's Dad |
 | Hannah Fierman als Sarah |
 | Shaun Fletcher als Deputy Pearl |
| Maximus Murrah als William |
| Marsha Fee Berger als Sister Susan |
| Rachael Gavrielli als Veronica |
 | Myles Cranford als Doctor |
 | Geoffrey Gould als Doctor |
 | Marion Guyot als Mrs. Wright |
 | Bobby C. King als Strange Man |
| Marilyn Light als Sister Olga |
 | Justin Miles als Jimmy |
 | Wanda Morganstern als Wealthy Woman |
 | John Penick als Mr. Wright |
| Candy Rachor als Sister Helen |
| Sara Sometti Michaels als Mary's Aunt |
 | John Archer Lundgren als Homeless Soup Kitchen Patron (uncredited) |
 | Tweed Michael Manning als Card Dealer (uncredited) |
| Geoffrey Gould als Doctor (uncredited) |
| Darren Lynn Bousman | Director |
| Clint Sears | Writer |
| Shaun Fletcher | Writer |
| Sara Sometti Michaels | Writer |
| Andy Demetrio | Writer |
| Tara Ansley | Producer |
| Seth Michaels | Producer |
| Jennifer Chandler | Set Decoration |
| Mark Sayfritz | Original Music Composer |
| Philip Bedrin | Executive Producer |
| Shaun Fletcher | Executive Producer |
| Luke Waki | Makeup Artist |
| Sara Sometti Michaels | Producer |
| Ashley Alvarez | Makeup Artist |
| Kimberly Bedrin | Executive Producer |
| Brian J. Smith | Editor |
| Jeff Traier | Executive Producer |
| Tracy Salazar | Makeup Artist |
| Rick Le | Executive Producer |
| Kevin Traier | Executive Producer |
| Oskar De La Cruz | Costume Design |
| Srđan Stakić | Producer |
| Andy Demetrio | Executive Producer |
| Joseph White | Director of Photography |
| Molly Coffee | Production Design |
| Matt Ward | Art Direction |
| Toby Sells | Makeup Effects Designer |
| Paul Cha | Makeup Department Head |
| Moe Coles | Key Hair Stylist |
| Drew Sawyer | Post Production Supervisor |
| Kevin Breen | Second Assistant Director |
| Katye Kalivoda | Second Assistant Director |
| Gene Michael Smith | First Assistant Director |
| Adam Brantz | Construction Coordinator |
| Jonathan Miles DeRosa | Property Master |
| Stephanie Postich | Assistant Property Master |
| Christopher Joseph Harris | Sound Mixer |
| Erick Jolley | Supervising Sound Editor |
| Kyle Lane | ADR Mixer |
| Matt Schultz | Dialogue Editor |
| John St. Denis | ADR Mixer |
| Brendan Trinkle | Dialogue Editor |
| Robert Vardaros | Boom Operator |
| Matthew Scurry | Special Effects Coordinator |
| Mark LeDoux | Visual Effects Supervisor |
| Sarah Reagin | Stunt Double |
| Nick DeKay | Stunt Coordinator |
| Andy Rusk | Stunts |
| Ryan Cheeks | Lighting Technician |
| Nick Cutway | First Assistant "A" Camera |
| Danny Daniel | Lighting Technician |
| Wilkinson David | Electrician |
| Danny Eckler | Steadicam Operator |
| Justin Elder | Lighting Technician |
| Mike Flores | Dolly Grip |
| Vincent Gandolfi | Best Boy Grip |
| Sara Garth | Second Assistant Camera |
| Edward A. Gutentag | Second Unit Director of Photography |
| Paul Hamacher | Key Grip |
| Jeff Kirschner | Gaffer |
| Justin Kursinsky | Rigging Gaffer |
| Boris Martin | Still Photographer |
| Jason Prince | Best Boy Electric |
| Tim Ryan | Gaffer |
| Taylor Schultz | Electrician |
| Tatem Spearman | Electrician |
| Reid Stegall | Lighting Technician |
| Jeff Tarver | Lighting Technician |
| Julia Pistsova | Key Costumer |
| Whitney Branning | Assistant Editor |
| Patrick Perry | Additional Editor |
| Gerhardt Slawitschka | Additional Editor |
| Rylan Soref | Music Supervisor |
| Jessica Hinckle | Script Supervisor |
| Dunn Elizabeth | Set Medic |
