| Person | Type | Job | Role(s) |
|---|---|---|---|
 Michael A. Martinez | Crew | Visual Effects | Visual Effects, Second Unit Director of Photography |
 Matthan Harris | Crew | Directing | Director, Writer, Producer |
 Marco Werba | Crew | Sound | Original Music Composer |
Cira Felina Bolla | Crew | Camera | Director of Photography |
Mary Kirby | Crew | Production | Associate Producer |
Matthew Alson Thornbury | Crew | Editing | Editor |
Jack Harris | Crew | Production | Associate Producer |
 Bill Moseley | Cast | Actor | Mr. O'Hara |
 Doug Bradley | Cast | Actor | Agent Wilson |
 Giovanni Lombardo Radice | Cast | Actor | Lieutenant Lorenzo |
 Matt Socia | Cast | Actor | Detective Andrews |
 Sid Haig | Cast | Actor | Dr. Gardner |
 Gerardo Davila | Cast | Actor | Detective Martin |
 Katharine Franco | Cast | Patricia | |
Lindsay Hightower | Cast | Melissa Daniels | |
Terry Spector | Cast | Detective Frederick | |
Dean A. Sorenson | Cast | Robert | |
Deborah R. Jones | Cast | Actress | Anatomy Lab Professor |
Janet Kirby | Cast | Anatomy Professor | |
Joshua Wilkins | Cast | Medical School Student | |
Ka Beesler | Cast | Actor | Agent Keller |
Kim Cicio | Cast | Dr. Barrows | |
 Martin Ezelle | Cast | Officer Jones | |
Matthan Harris | Cast | Actor | David O'Hara |
Zach Leftwich | Cast | Joe | |
Aaron Kepler | Cast | Medical School Student | |
 Adam Litwin | Cast | Officer Gray | |
 Alicia Underwood | Cast | Actress | Rachel |
Allison Victoria-Wolfe | Cast | Actress | Angela |
Amy Erin Amory | Cast | Kristen | |
Aunik Zaman | Cast | Medical School Student | |
Blanchette Ledlum | Cast | Medical School Student | |
Charles Duran | Cast | Detective Samuels | |
Eric Garrett | Cast | Medical School Student | |
Ian Maurer | Cast | Jamey Miller | |
Jesse Shadle | Cast | Medical School Student | |
Jessica Goldfield | Cast | Medical School Student | |
 Kerry McCormick | Cast | Actress | Medical School Student |
Kimberly Smay | Cast | Medical School Student | |
 Lindsay Seidel | Cast | Actress | Rachel (voice) |
Marcelli Felice | Cast | Hooker #1 | |
Mark Lawyer | Cast | Medical School Student | |
Micah Goodier | Cast | Medical School Student | |
Shane Land | Cast | Officer Harris | |
Sophia Rojas | Cast | Medical School Student | |
Aaryn-Nicole Cox | Cast | Jessica | |
 Amber Burroughs | Cast | Isabel (voice) | |
Elena Kivil | Cast | Ashley O'Hara | |
Eric A. Maskell | Cast | Hospital Guard #2 | |
Gabe Saenz | Cast | Stuart | |
Kasie Callaway | Cast | House Party Guest | |
Kimberly Birdow | Cast | Hooker #2 | |
Ricardo Neaves | Cast | Hospital Guard #1 | |
Richard Linn | Cast | Young David O'Hara | |
Riyad Faruque | Cast | House Party Guest | |
Sarah Kate Allsup | Cast | Actress | House Party Guest |
Sean Hubbard | Cast | Chance Palman | |
Tisha Wilson | Cast | Medical School Student | |
 Michael Hodson | Cast | Actor | Anatomy Student #2 |
| Person | Type | Job | Role(s) |
