The teaser, titled "Apostle | Are You Ready For It?," is not for the faint of heart -- and presumably, the movie isn't either. It shows Dan Stevens as Thomas Richardson, a man who goes to rescue his sister after she's kidnapped by a cult and held for ransom on a remote island. Based on what we've seen, the mysterious cult doesn't hesitate to use violence or torture, and Thomas has to deal with both.
Watch the teaser below and be warned that it's a little gruesome.
It looks chilling, but given that the film's release date comes in October, it might be just what horror fans are looking for this month.
If you're ready for it, "Apostle" hits Netflix on Oct. 12.