The phrase "how to murder your wife 19" appears to be referring to the 1965 American black comedy film titled "How to Murder Your Wife." The film stars Jack Lemmon as Stanley Ford, a successful newspaper cartoonist who drunkenly marries an Italian woman and then bitterly regrets it. The plot revolves around his attempts to cope with the sudden change in his life, including an imagined murder plot that he enacts for his comic strip. The story includes comedic elements of misunderstanding and courtroom drama, where Stanley is charged with murder based on his comic strip's storyline but is eventually acquitted. This film is known for its dark humor and satire on marriage and relationships, but it is purely fictional and comedic, not a real guide or advice on harming anyone. The number "19" in the query may be a misinterpretation or unrelated to the film's content, which was released decades ago. If more information is needed about the film "How to Murder Your Wife" or its plot, I can provide a detailed summary, but any interpretation should be clearly understood as related to the movie's fictional story, not real-life actions. Let me know if a detailed movie synopsis or other related information is desired. The film's main storyline involves a humorous but fictional scenario surrounding marriage and fictional murder plans, reflecting social comedy from the 1960s.