‘If you can’t understand what sex is, it’s irrelevant if you seem to be enjoying it’: how Queen at Sea upended the dementia drama

Lance Hammer’s first film in 18 years is a heart-wrenching masterpiece about family, mental decline and sexual consent. He and supporting actor Juliette Binoche discuss how they brought unabashed realism to a condition rarely seen on screenThe first time we see Martin and Leslie, the elderly couple at the centre of Lance Hammer’s wrenching new film, Queen at Sea, they are walking together up a set of stone steps: one of their regular outings, we assume, in days filled with pottering and quiet companionship. They have their backs to us, and we can’t see their destination beyond a bleached sky that fills the top half of the screen. Symbolically, it may be deemed a bit on the nose: two people near the end of their lives, moving gently towards the white light of oblivion. There’s a whiff of sentimentality about it.But any doubts about this story’s willingness to confront difficult truths are blasted away by the next scene. Leslie’s daughter, Amanda, played by Juliette Binoche,