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Of all the notorious serial killers of history that have fascinated true-crime lovers, no one is more intriguing than Jack the Ripper. Tearing through 19th century London, butchering prostitutes, and sending taunting letters to the police, he was a force to be reckoned with, and to date, no one knew who he was. He was never caught, which means the case was never closed.
At least, until now.