Calibre

In the bustling heart of London, a mysterious figure known as the "Manners Killer" embarks on a ruthless mission to teach others the importance of etiquette through deadly consequences. As this vigilante punishes those he deems rude, he begins sending letters to the Southeast London police, challenging Inspector Brant, a hardened detective with a notorious reputation. With tensions rising, the city grapples with the twisted intersection of civility and crime.