“Jack the Ripper,” whoever he was, was thought to be responsible for a string of horrific murders of Whitechapel, London prostitutes in 1888. The name “Jack the Ripper” was coined for the anonymous serial killer by the media. The killer performed grotesque crimes, completely mutilating the bodies of his female victims. Many copy-cat criminals, and perhaps Jack the Ripper himself, sent threats of violence to the Whitechapel police department. One letter, presumed to have been sent from the real “Ripper,” was accompanied with a kidney. The serial killer’s identity was never discovered, and remains a popular topic of public intrigue.