A woman wearing headphones frowns while looking at a phone.

The spirals have been on an ongoing mystery in True Detective: Night Country, popping up on episode 2’s frozen corpsicle as well as the roof of Clark’s creepy trailer — and it looks like we’ll be seeing more of them in episode 4.

In the one-minute teaser above we see the symbol carved on a small rock and daubed in what looks like blood on the wall of a dark room. The creepy closing words, as police chief Liz Danvers (Jodie Foster) and state trooper Evangeline Navarro (Kali Reis) stand facing something unseen in the middle of nowhere? « You’re all in the night country now. »

How to watch: True Detective airs Sunday nights on HBO/Max at 9 p.m ET/PT.