Scare Campaign is a 2016 Australian horror film written and directed by Colin and Cameron Cairnes, and starring Meegan Warner, Ian Meadows, Olivia DeJonge and Josh Quong Tart.
Their latest target (John Brumpton) nearly ends up shooting an actress thinking she's a real zombie until the crew reveals that it's a prank.
Emma, another actress on the show, speaks to her director and ex-boyfriend Marcus (Ian Meadows) about being more careful who they prank in case they end up scaring "the wrong guy."
When Abby is signalled to surprise him, Rohan reacts by stabbing her to death with a letter opener, strangling cameraman Tony and slitting the throat of actress Suze.
Suddenly, Masked Freaks appear with weapons equipped to their cameras and kills Trent, revealing themselves as actual serial killers and not actors as their show made it look.
On the drive back to town, Emma notices one of the Masked Freaks cameras in the van pointing at her, leaving her to wonder about Abby's involvement.