At times, its overtly camp hypnosis sequences distract from the more endearing work of its veteran leads. At others, the disarming relationship between Foster and Auteuil elevates its quieter, sweeter moments into something genuinely touching.

This stylish, silly and strange whodunnit/family-drama mash-up, while shaky at times, is a fun filmic amuse-bouche, with Foster on top form.

The screenplay doesn’t hold up to scrutiny: it’s a flimsy thing, barely propped up by unconvincing character behaviour and a tenuous foray into regression hypnosis.

Zlotowski masterfully sketches a French Jewish family and all its messy intersections in a society that privileges the principle of laïcité, the state religion of secularism.