" Morrough also said of Dowdy, "He knew we were dealing with a serial murderer.

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Then he came across a novel inspired by a serial murderer who kept the corpse of his dead mother in her bedroom.

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The capture last weekend in Kansas of a serial murderer who had taunted his victims' families and the police for decades will remind Americans that sometimes evil is just evil.

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But what do you do about a serial rapist or a mass murderer?

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The Moors murderer Ian Brady, another of Britain's most notorious serial killers, craves death.

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Detectives believed the messages - which boasted about how police had failed to capture the serial killer - were genuine and diverted attention to Wearside, away from the real murderer, Bradford's Peter Sutcliffe.

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