These are the worst serial killers of all time. For this list, we'll be looking at the creepiest multiple-fatality felons that kept us up late at night due to their terrible actions and unsettling behavior. Our countdown includes Dennis Rader, Albert Fish, Jeffrey Dahmer, H.H. Holmes, and more. read more...
20 Most Terrifying and Disturbing Serial Killers
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VOICE OVER: Peter DeGiglio
WRITTEN BY: Jordy McKen
