A silly-scary Twitter thread that went viral last summer, as people got swept up in two friends’ tag-teamed, real-time horror tale, has been turned into a movie, and it’s getting a premiere at this year’s Fantastic Fest in Austin.

You Might be the Killer started life as a funny back-and-forth between writer Chuck Wendig (whom you may know as the author of 2015’s Star Wars: Aftermath) and fantasy author Sam Sykes, all the way back in July of last year, when Sykes innocently shot out a ‘yo, can you help me out’ to his buddy on Twitter. The ensuing exchange roped in more than 11,000 followers.

Fast-forward to the present, and we’ve been gifted with a feature-length movie that, judging from the trailer, looks like a fun step toward the silly side of the horror trope meta-riffing pioneered way back in 1996 by Scream.

The setup finds a blood-spattered Sam calling up his buddy Chuck for on-the-fly advice on how to handle the very real serial killer who’s unleashing havoc at Camp Clear Vista. As you might guess, most of Chuck’s assistance comes in the form of outwitting all the predictable outcomes she’s learned from horror movies.

Video of YOU MIGHT BE THE KILLER - TRAILER 1 Griff Furst on YouTube

“Told from the perspective of the third act looking back upon the horrors and plot twists through flashback, it’s a full reversal of the beats one expects in this subgenre,” the film’s official Fantastic Fest summary explains. “Rather than endearing us to the characters slowly so we fear for their deaths, we’re shown their deaths almost immediately upon meeting them. Ultimately, instead of being about one-dimensional sexy teens meeting their demise, it’s about the joys of both the kill and the genre itself.”

Starring Alyson Hannigan (Buffy the Vampire Slayer) as Chuck, Fran Kranz (The Cabin in the Woods) as Sam, and directed by Brett Simmons (Husk, The Monkey’s Paw), You Might be the Killer arrives at Fantastic Fest without a distribution deal. But it’s got such a cool backstory, and looks like so much fun in its film form, that it’d be a shame if it doesn’t get picked up for wide release.

Produced by Wendig, Sykes, Griff Furst, and Tom Vitale, You Might be the Killer debuts Sept. 21 in Austin. Stay tuned for any new info on where it might end up next.