The Lighthouse might be even creepier than Robert Eggers's critically acclaimed directorial debut, The Witch. The film is entirely set on a desolate island in the 1890s and stars Robert Pattison and Willem Dafoe as deeply unhinged lighthouse keepers or “wickies.”

The film premiered at Cannes this year, where audiences were wowed by Pattinson's intensely physical performance. According to Variety, the next Batman, descends into madness as he degenerates from lugging bricks across the island, to drinking Kerosene and masturbating to a mermaid figurine.

The trailer gives some sense of the oppressive darkness of the film and the surreal turn it will take. Perhaps the most telling shot is from the point of view of a giant octopus; Pattinson raises his clenched first to strike as the octopuses' tentacles wrap around his neck and flail behind him.

The Lighthouse hits theaters October 18.