Understandably, we tend to think of elderly women as among the most vulnerable in society, and so that means they make excellent nemeses in horror films because no one thinks that an old dear could do much damage. Unless, that is, she’s got a fire poker, a house full of useful clutter, dementia and a violent streak, as is the case with Alicia, played here by the wonderful Carmen Maura, once the lead in Pedro Almodóvar’s Women on the Verge of a Nervous Breakdown. Now 80 years old, still spry as a whippet and clearly up for movie mischief, Maura gives Alicia a dirty glint in her eye as she confuses her daughter’s ex-boyfriend Pedro (Daniel Hendler, showing great comic chops) with her late husband Cesar. He apparently turned Alicia on to some BDSM fun and games in their youth, and may have assisted Alicia in covering up a murder or two. Unless she’s just making that part up – it’s hard to tell what’s true or false given her murky memory.

On a dark and stormy night, Pedro arrives at the insistence of his ex Laura (Agustina Liendo) to check on Alicia in the decrepit mansion where she lives alone. Laura is on a road trip with her young daughter (Emma Cetrángolo), but she’s sensed that something’s up, especially since when she called Alicia’s carer, Alicia herself answered the phone. Pedro’s unfortunate resemblance to Cesar gets him lashed to an armchair in chains and duct tape while Alicia quizzes him on their history, with gory results.

Argentinian director Martín Mauregui is better known for his work as a screenwriter, but he handles this brisk, chamber piece with skill. Who knows how much producer JA Bayona, himself a dab hand as a director of thrillers and horror (The Orphanage, A Monster Calls, The Impossible), contributed to making this a polished dark comedy of family dysfunction, but we’re here for the chance to appreciate Maura’s impeccable timing and charismatic screen presence. It’s not a deep work, but it’s relentlessly fun if you’re not squeamish, or indeed sentimental about animals getting killed in the opening minutes.

Crazy Old Lady is on Shudder and AMC+ from 27 February.

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