The film centers on Edith Swan (Olivia Colman), part of the respectable Swan family who adhere to a strict religious lifestyle under the guidance of her father Edward (Timothy Spall) and mother Victoria (Gemma Jones). A letter arrives, prompting an anxious gathering around the dinner table. These aren't isolated incidents; it leads her dad directly to the police station where he insists they arrest their new neighbor. She’s a stark contrast to the Swans’ proper demeanor. Rose (Jessie Buckley) is a single parent with a colorful vocabulary who isn't afraid to speak plainly, and after an initial friendship with Edith, she seems to have made enemies within the community. It's not just Edith who feels this way; most of the townspeople view her with suspicion, and facing potential imprisonment, she needs assistance! Unexpectedly, help arrives from several villagers and a dissatisfied police officer, Moss (Anjana Vasan), who suspect something isn’t right and decide to uncover the author of these awful letters – a pursuit reminiscent of "Miss Marple." I was able to figure out who sent them fairly early on, but that didn't detract from this entertaining story about societal hypocrisy and prejudice. The dialogue is full of colorful language, and even when it pushes boundaries, it’s amusing to consider what might have genuinely shocked previous generations. There’s a delightful subplot featuring Dame Eileen Atkins, Joanna Scanlan, and Lolly Adefope that keeps the humor flowing, while Hugh Skinner and Paul Chahidi contribute to the police force's overall incompetence. And naturally, Rose has a black boyfriend named Bill (Malachi Kirby), which only serves to further upset her more sheltered neighbors. It’s genuinely amusing – not laugh-out-loud funny, but it elicits plenty of smiles, and both Buckley and Colman demonstrate excellent comedic timing.

Source on TMDB