1. Dennis Nilsen
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True Crime UK from CBS Reality. Nilsen murdered 15 young men whose bodies he sought to preserve as companions before dismembering their remains for disposal down the toilet.
True Crime UK from CBS Reality. Pickton was a pig farmer who killed 49 women before feeding them to his hogs. He was caught when an undercover police officer posed as a cellmate.
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4. Robert Pickton - True Crime UK from CBS Reality. Pickton was a pig farmer who killed 49 women before feeding them to his hogs. He was caught when an undercover police officer posed as a cellmate.
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