"The Last Detective" is a British television series based on the novels by Peter Lovesey. The show follows the character Detective Sergeant Peter Diamond, a seasoned but unconventional detective in the fictional city of Bath. He often relies on his instincts and experience to solve complex cases, navigating both personal and professional challenges. The series features a mix of crime, drama, and humor, showcasing Diamond's interactions with his colleagues and the community. It highlights themes of justice and morality while providing engaging mysteries for viewers. The show aired from 2003 to 2007, gaining a loyal fan base during its run.