One of the most prolific writers of the twentieth century, Edgar Wallace was an immensely popular author, who created exciting thrillers spiced with tales of treacherous crooks and hard-boiled detectives. „The Double” is a story about a man who encounters his unknown double and the trouble that arises. When Dick Staines joined the police force the big case of the day had been the Staines murder. The only clue was an unknown thumb-print, the case was never solved. Ten years later and Detective Inspector Staines investigating a curious burglary in fashionable Belgravia finds a thumb-print on a glass. The strangest of murders with surgical overtones confronts Dick Staines our Cambridge educated detective.