Watch: Robert Pattinson & Willem Dafoe Lose Their Seafaring Minds in 'The Lighthouse' Trailer

The trailer for the highly anticipated seafaring horror film "The Lighthouse" is here.

Starring Robert Pattinson and Willem Dafoe, the film follows two lighthouse keepers – Ephraim Winslow (Pattinson) and Thomas Wake (Dafoe) – on a remote and creepy island in New England during the 1890s. Shot in black and white, "The Lighthouse" is the follow up to Robert Eggers' 2016 acclaimed horror film "The Witch."

In the disorienting trailer, Thomas asks Ephraim, "How long have we been on this rock? Five weeks? Two days? Help me to recollect." Also in the clip: what appears to be a giant octopus.

"The Lighthouse" debuted earlier this year at the Cannes Film Festival to great reviews, currently holding a 98% on Rotten Tomatoes. It hits theaters on Oct. 18. Check out the trailer below.