Jay, a retired soldier, found it difficult to make a living and find a job when he returned to Britain. Forced by helplessness, he joined hands with his old partner Gal to do the job of a professional killer. But the mysterious employees and weird midnight cult rituals that followed surprised them to feel that they were being used. The film was rated as the "strangest", "scariest" and "most unexpected" British horror film in history. Although the film is interspersed with three types of family dramas, horror films and best friend comedies, the director perfectly combines these three different types, especially when creating killer brothers, which seems to be innate funny. It is amazing, and its degree of classics is no less than the image of brothers portrayed by Quentin in the vulgar novel. The opening tone of the film will make the audience mistake it as a post-Iraqi gangster and gangster film. With the development of the story, the overall style of the film is officially transformed into a horror film. The director likes the horror films of the 1970s because "the film is a portrayal of that era." So he wants to bring the sense of age into his film and create an ordinary family that is heavily in debt and unable to turn around under a lot of realistic pressure. The only salvation is to close himself. "the name of the killer.