The name "Jack the Ripper" originated from a letter to a newspaper. It didn't actually describe how the killer murdered his five victims, which, with one exception, was by strangulation. The nickname apparently referred to the murderer's practice of mutilating his victims' bodies after they were dead. In fact, Jack's victims' bodies were not ripped apart, but were slashed open with a sharp knife. Jack the Ripper sometimes took his victims' internal organs and other body parts as souvenirs.
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