Ozon’s drama mixes implied horror with sentimentality as it examines dangerous secrets and the disastrous ramifications of an (accidental?) poisoning

That amazingly prolific film-maker François Ozon returns with an intriguing, if tonally uncertain, mystery drama about a suspected murder. In it, the implied Chabrol-esque horror is made to coexist with an odd mood of gentleness and even sentimentality as we witness the loneliness of an ageing woman with secrets and regrets in the autumn of her life.

This is Michelle, played by 81-year-old actor-director Hélène Vincent; at one point, Ozon allows us to notice she is reading a book by Ruth Rendell, whose thrillers were famously adapted by Claude Chabrol and indeed by Ozon himself (The New Girlfriend). This film is not a Rendell adaptation, but I wonder if Ozon and his co-screenwriter Philippe Piazzo were inspired by the Rendell short story Means of Evil, which also involved mushroom...