Creepy stuff from French director Lucile Hadžihalilović, who has collaborated as a writer and editor with her provocateur husband, Gaspar Noé (I Stand Alone), but whose own work owes more to the obscure art-house horror of David Lynch. In a rocky region by the sea, a little boy comes to his mother with a fantastic tale of having found another boy drowned with a red starfish attached to his belly; eventually his obsession with the fish lands him in the hospital, where eerie nurses subject him and other little boys to sinister surgeries. Hadžihalilović maintains a dank, spectral mood, and she’s admirably disciplined in her slow revelation of what amounts to a gynocentric nightmare. The characters are so blank that she has trouble conjuring up any sort of dramatic resolution, but you may leave shuddering nonetheless. In French with subtitles.