The film is based on British writer Kate Ken's best-selling novel the Eye of Needles. At present, the novel has been translated into more than 30 languages and has sold more than 10 million copies. And was selected by the American Association of reasoning Writers as the 100 best mystery novels. Cold Blade tells the story of the fugitive after a German spy codenamed Needle discovered the Allied plan to attack Normandy before the Normandy landings in World War II. The plot of this film is very compact, and the warmth shown by ruthless and ruthless spies in front of love is really touching. The film has been repeatedly praised by the famous time magazine and the New York Times Book Review, and has become one of the most popular films of the year.