What a wonderful title. Okay, maybe it’s not easy to remember. “A Real Pain”, a commonplace phrase, won’t stick in the brain as did “On the Waterfront” or “Santa Claus Conquers the Martians”. But the irony is beautiful. Kieran Culkin, apparently on an unstoppable run to an Oscar, here plays the sort of aggressively gregarious relative who dismisses other people’s inhibitions as mere irrelevancies. Worried about me smuggling a sack of weed through customs? Get over yourself. Listen up while I take over the piano in this restaurant.

He is, in that colloquial sense, a real pain. But the title also works in a less frivolous mode. As Jesse Eisenberg’s light-fingered second directorial effort progresses it becomes clear that Benji Kaplan’s bluster is – as bluster often does – concealing a smarting inner wound.

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It’s a touching, funny drama that allows truths to emerge subtly and sometimes ambiguously. Eisenberg can’t quite find the right tone for the eventual visit to a concentration camp – A Real Pain briefly shuts down rather than engaging – but that is forgivable in a film that otherwise processes the unimaginable past with great subtlety. A small film about great matters.