The author of Get Carter returns to his greatest invention, a smooth-operating hardcase named Jack Carter, who is about to burn a city down in order to silence an informant...London. The late 1960s. It's Christmas and Jack Carter's the top man in a crime syndicate headed by two brothers, Gerald and Les Fletcher. He's also a worried man. The fact that he's sleeping with Gerald's wife, Audrey, and that they plan on someday running away together with a lot of the brothers' money, doesn't have Jack concerned. Instead it's an informant - one of his own men - that has him losing sleep. The grass has enough knowledge about the firm to not only bring down Gerald and Les but Jack as well. Jack doesn't like his name in the mouth of that sort.
