Françoise Lebrun delivers an outstanding and unforgettable portrayal as Elle, a lady in her senior years struck down with dementia and living in a world that's alien, confusing, bewildering and extremely dangerous. So convincing is her presentation that you spend most of the film half believing that she must genuinely be suffering, that this is a documentary, a fly on the wall observation. Similarly, Dario Argento fulfils the role of the loving but ever so slightly irritated grumpy old man, wishing to get on with his life while more often than not, turning a blind eye to his wife's descent, knowing only too well the consequences once others take control of the situation.

This film recognises what most people have gone through, or will go through, either directly or as close witnesses. Filmed in an imaginative style by the progressive Gaspar Noé, my only complaint is that I was extremely keen for the end to arrive as it outstayed its welcome by around 30 minutes and, as such, I'm unlikely to revisit it again any time soon.