The Adventure of Charles Augustus Milverton is one of the most memorable and morally complex tales in The Return of Sherlock Holmes. Charles Augustus Milverton is London’s most notorious and repulsive blackmailer, who ruins lives by extorting money from the wealthy using stolen compromising letters. A desperate client hires Holmes to retrieve her letters before Milverton can ruin her upcoming marriage. Holmes and Watson go undercover and eventually burgle Milverton’s heavily guarded villa at night in one of the few times Holmes deliberately breaks the law. While hiding inside the house, they witness a dramatic and shocking act of vigilante justice carried out by one of Milverton’s high-born victims. The story ends with Holmes refusing to assist the police in the investigation, delivering one of his most famous lines about crimes that the law cannot touch. It’s a dark, tense, and atmospheric story that shows a more ruthless side of Holmes.