In the short footage, viewers are hit with music reminiscent of the shower scene from Alfred Hitchcock’s Psycho.
A count begins as numbers flash up on the screen followed by 13 snapshots of scenes from the forthcoming run.
The brief glimpses are disturbing and one features a group of teenagers emerging from a camper van wearing scary Halloween masks.
xAnother shot reveals a group of scientists cowering in a lift as something sinister and off-screen rushes towards them at speed.
Fans also get a glimpse of Dustin Henderson (played by Gaten Matarazzo) and Steve Harrington (Joe Keery) looking down a hole with a torchlight, hinting at a portal to the Upside Down.
Meanwhile, Nancy Wheeler (Natalia Dyer) is drenched in sweat as she runs through a house – has she ended up in the Upside Down as the parallel universe starts to filter into the real world?
A Stranger Things season 2 teaser trailer has been released by Netflix
Pollice detective Jim Hopper is decontaminated on Stranger Things season 2
On Friday the 13th watch the final trailer. Once will never be enough
Stranger Things season 2 teaser trailer
As the clip progresses, the montage gets even creepier as police chief Jim Hopper (David Harbour) is quarantined and decontaminated by figures in biohazard suits, presumably after coming back from the other universe.
Joyce Byers (Winona Ryder) and her new boyfriend Bob Newby (Sean Astin) makes an appearance as the store worker is frantically digging with a shovel.
Mike Wheeler (Finn Wolfhard) later covers his ears as he looks on in terror, before we’re hit with what appears to be flashback of possibly Eleven’s (Millie Bobby Brown) mother getting tested.
Figures in masks appear in the Stranger Things season 2 teaser
Stranger Things season 2
Fri, July 28, 2017
Stranger Things: Netflix have released new images for season 2 of the eagerly anticipated show.
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Stranger Things Season 2: First Look
A potential flashback to Eleven's mother in the Stranger Things season 2 teaser
As the numbers ends and music crescendos, a gravelly voiceover says: “On Friday the 13th watch the final trailer. Once will never be enough.”
The teaser concludes on the Stranger Things theme music and iconic logo.
It comes as the Netflix hit revealed the episode titles from season two, revealing some big clues.