The Most Terrifying Serial Killers Who Were Never Caught

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Vote up the scariest murderers who evaded police capture

We know the true names of several vicious and frightening serial killers, names which have entered into our collective cultural consciousness—infamous names like John Wayne Gacy, Ed Gein, Ted Bundy, Jeffrey Dahmer, Henry Lee Lucas, Ottis Toole, Dennis Rader (AKA BTK), and Gary Ridgeway (AKA The Green River Killer).

But what of those killers out there who, like Rader and Ridgeway, have fairly infamous killer nicknames, but whose true identity remains a mystery? Arguably, these killers are far more terrifying than the names listed above because we still know very little about them, least of all their real names. From world-renowned figures like Jack the Ripper and the Zodiac Killer, to lesser-known, but no less horrific murderers like Servant Girl Annihilator and the Monster of Florence, these unknown serial killers captivate our imaginations, and thus gain access to our worst nightmares.

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  • 1
    5,945 votes
    Zodiac Killer is the pseudonym of an unidentified serial killer who operated in Northern California from at least the late 1960s to the early 1970s. The Zodiac murdered victims in Benicia, Vallejo, ...more
  • 2
    5,785 votes
    Jack the Ripper was an unidentified serial killer generally believed to have been active in the largely impoverished areas in and around the Whitechapel district of London in 1888. In both the ...more
  • The Long Island serial killer (also referred to as LISK, the Gilgo Beach Killer or the Craigslist Ripper) is an unidentified suspected serial killer who is believed to have murdered 10 to 16 people ...more
  • The Cleveland Torso Murderer (also known as the Mad Butcher of Kingsbury Run) was an unidentified serial killer who was active in Cleveland, Ohio, United States in the 1930s. The killings were ...more