Due to a fire which occurred at a chief location after the film had already hit the festival circuit, Screamer went back into filming and post production a 4th time in February of 2012. This resulted in a new ending to the film and the copyright of the film changed from 2011 to 2012.
Director William N McHugh composed a portion of the score uncredited using a mix of analog synthesizers including a Korg Poly 6. He said in an interview he was trying to emulate the tone of Halloween 3, Season of the Witch.