“Keeping secrets are you?” asks Willem Dafoe as a bearded, reclusive lighthouse keeper.

The secret-keeper being Robert Pattinson (a k a our new Batman) in the new trailer released Tuesday for “The Lighthouse,” a hallucinatory psychological thriller directed by Robert Eggers, the force behind spooky folklore-inspire film “The Witch” (2015).

Set just before turn of the 20th century, Pattinson’s character, apparently “on the run,” joins Dafoe on the shores of a remote Maine island to tend to the lighthouse — before madness seems to creep in.

Awash in darkness, the jarring black-and-white trailer depicts the two men skulking through obscure corridors, guzzling nondescript spirits, dancing like maniacs and grappling with each other, some tentacled marine creature and, presumably, said secrets.

The film, co-written by Eggers and his brother, Max, and shot on 35 millimeter film, has enjoyed much critical acclaim after being named the best movie at Cannes’ Critics Week and Directors’ Fortnight by the International Federation of Film Critics (FIPRESCI). It’s been said there’s even Oscars chatter.

Eggers told Deadline Studio attendees at Cannes the film was “something a little weirder” than his 2015 debut feature, “more dreadful than horror,” he said.

“The Lighthouse” opens across the US on Oct. 18.