If you've never heard of these criminals, consider yourself lucky. For this list, we'll be looking at the freakiest and most depraved serial killers that don't often get mainstream attention. Our countdown includes Gerard John Schaefer, Salvatore Perrone, Karl Denke, and more! read more...
Top 10 Scariest Real-Life Killers You've Never Heard Of
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VOICE OVER: Rebecca Brayton
WRITTEN BY: Nathan Sharp
