21 Gruesome Serial Killers You May Not Have Heard Of — But You’ll Never Forget

Denis Nilsen

“Denis Nilsen. He is a British serial killer and former policeman. He used to lure “lost” young men like drifters to his apartment with the promise of food. He would murder them and keep their bodies around to talk to until they decomposed too badly. then he would dismember and incinerate them. He killed 16 men before being caught.” — ZigguratofDoom

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