Tyburn
Tyburn is the historic place of public execution in London, referenced in The Three Musketeers as the ultimate legal penalty that Lord de Winter threatens against his sister-in-law, Milady. Its appearance in the novel serves to contrast the formal, state-sanctioned justice of England with the secret, private vengeance that the four friends ultimately exact upon her in France.
Threat of Tyburn
Lord de Winter, having captured Milady and imprisoned her in his castle, explicitly offers her a choice between two fates: transportation to the American colonies or execution at Tyburn. He tells her, "I have given you the choice between America and Tyburn... Choose Tyburn, madame. Believe me, the cord is more certain than the knife" . This threat is not merely rhetorical; Lord de Winter later elaborates that if she were to be tried under her true name, the English laws are "inexorable on the abuse of marriage," and he would risk the scandal of a public trial to be rid of her . Tyburn thus represents the formal, public, and legal avenue of punishment that Lord de Winter is prepared to pursue.
Contrast with the Actual Execution
Despite Lord de Winter's threats, Milady never faces Tyburn. Instead, after her trial by the four friends and the executioner of Lille, she is beheaded on the banks of the Lys River in France, and her body is thrown into the water. The novel explicitly contrasts these two fates: during her trial, when Milady cries out, "If I am guilty... take me before a tribunal. You are not judges! You cannot condemn me!" Lord de Winter replies, "I offered you Tyburn. Why did you not accept it?" . This exchange underscores that the execution at the Lys is a private, extralegal act of vengeance, while Tyburn would have been a public, state-sanctioned punishment. The novel thus uses Tyburn as a symbol of the official justice that is denied to Milady, replaced by a more personal and secretive form of retribution.