Don't lose your head in trailer for Charlie Kaufman's Netflix horror film 'I’m Thinking of Ending Things'

Tenet's not the only upcoming movie where time seems to have lost its meaning. The upcoming psychological horror movie from writer/director Charlie Kaufman (Eternal Sunshine of the Spotless Mind), I’m Thinking of Ending Things, looks to give Kaufman fans more of his heady plotting and increasingly disturbing genre elements — all bundled up into a relationship drama that looks to give anyone a phobia of visiting the in-laws.

Adapting a beloved horror novel (Ian Reid's debut won NPR’s Best Book of the Year award in 2016), the film's tense first trailer teases that something's wrong not only with the people inside the film, but the way time is working all together.

The idea of being trapped with the just off-parents of her boyfriend (Jesse Plemons) on their farm is enough to give anyone whose weathered the pandemic a tension headache. When it's Toni Collette and David Thewlis, doing some utterly weirdo acting, it's enough to send a shiver down the spine. No wonder Jessie Buckley's character is thinking of ending things.

Take a look:

The trailer mostly leaves fans with questions. Why is Buckley's character seeing these people at all stages of their lives? Why is time moving through its characters rather than the other way around? Why would Collette's character mention losing her head if it wasn't a winking reference to the actress' earlier horror film Hereditary?

With Kaufman, fans were always going to get more head-scratchers than hard answers, but this twisty puzzle looks to blend some great trapped-in-the-house horror elements with some utterly Black Mirror-esque sci-fi. Get ready to take some notes.

I’m Thinking of Ending Things hits Netflix on Sept. 4.