10 of the World's Most Evil Female Serial Killers (PHOTOS)

When you think of serial killers, you think deranged, disturbed, and definitely male. Whether it's Ted Bundy, John Wayne Gacy, or Jack the Ripper, serial killers and the Y chromosome go together like killer sharks and Jaws theme music. But believe it or not, some of the worst serial killers in the world are women. Not only women, but wives and mothers too. Here are 10 of the world's worst female serial killers.