 | Sierra McCormick als Melissa |
 | Vinessa Shaw als Diane |
 | Pat Healy als Robert |
 | John James Cronin als Bobby |
 | Lisette Olivera als Amy |
 | Ozzy Osbourne als Good Boy (voice) |
 | Logan Kearney als Joe |
 | Dan John Miller als The Voice At The Door (voice) |
| Sean King O'Grady | Director |
| Shane Patrick Ford | Editor |
| Jean-Philippe Bernier | Director of Photography |
| Amy Williams | Production Design |
| Dan Rebert | Creature Effects Technical Director |
| Ryan Lewis | Producer |
| Josh Malerman | Producer |
| Peter Block | Producer |
| Angie Hartley | Art Direction |
| Bic Owen | Costume Design |
| Stein TD | Makeup Artist |
| Colin Alexander | Sound Designer |
| Colin Alexander | Sound Re-Recording Mixer |
| Patrick Longstreth | Visual Effects Supervisor |
| Ja-Ann Wang | Dialogue Editor |
| Max Booth III | Screenplay |
| William Stertz | Producer |
| Lauren Hantz | Executive Producer |
| John Hantz | Executive Producer |
| Max Booth III | Executive Producer |
| Max Booth III | Novel |
| Colin Duerr | Co-Producer |
| Dave Krieger | Co-Producer |
| Donovan Leitch | Executive Producer |
| John Malerman | Producer |
| Bill Stertz | Producer |
| Katherine Waddell | Executive Producer |
| David Chapdelaine | Original Music Composer |
| Anna Haduck | Makeup Designer |
| Heather Galipo | Key Makeup Artist |
| Dave Krieger | Unit Production Manager |
| Justin Ward | Gaffer |
| Heather Galipo | Key Hair Stylist |
| Michael Donald Bryant | First Assistant Director |
| Kathryn Postema | Second Assistant Director |
| Katherine Akiko Day | Set Designer |
| Stefan Fraticelli | Foley Artist |
| Cruce Grammatico | Sound Mixer |
| Justin Helle | Foley Mixer |
| Tina Zinski | Special Effects Technician |
| Chad Miller | Key Grip |
| Ele Bardha | Stunt Coordinator |
| Dan Lemieux | Stunts |
| Jack Schmier | Set Dresser |
