Reviewers sometimes give away films without meaning to. In the case of mother!, Darren Aronofsky’s latest cinematic experiment, it is hard to give away anything because it is genuinely hard to say what the film is about or what happens in it. About the only consistent explanation for this tale of Mother (Jennifer Lawrence) and Him (Javier Bardem) and the events in their home is that it is a cinematic rendering of psychosis, but to describe it as such feels reductive. It could potentially be a supernatural tale of raising unearthly powers, but the film’s avoidance of indicative horror tropes undercuts that interpretation. Or it could be a dramatisation of the creative process, the characters metaphors for parts of the mind, but that explanation also fails to work across the whole film. What I can say is what the film does, which is put its viewer through a relentless, gruelling and singularly extraordinary experience. Aronofsky eschews narrative logic but offers just enough plausibility to keep the film grounded, while the ever-escalating pace of his direction increases the tension to nerve-shredding levels. Long, travelling shots mix with 360-degree pans, abrupt cuts and subjective angles that place us uncomfortably inside the action that takes place in a (literally) disintegrating location. The performances are superb, especially Lawrence who is onscreen virtually the whole time, her increased franticness becoming more and more hysterical, which is of a piece with the film as a whole. Bardem offers a calm contrast that is more chilling than comforting, while Man (Ed Harris) and Woman (Michelle Pfeiffer) are suitably disturbing. Quite what is going on is very open to interpretation, as is the film’s genre that combines jet black comedy with relentless horror with Biblical allegory and fantastical sequences. The only thing that seems certain is mother! will have an effect on you, but it is a film that demands to be seen, partly because it’s a bold, experimental and genuinely surreal experience, and partly to find out just what your reaction is.