text: One database that tracks these people categorizes them as “missionaries” or “bluebeards,” among others.
full_question: One database that tracks these people categorizes them as “missionaries” or “bluebeards,” among others. Former FBI agent Robert Ressler is credited with coining the term referring to these people. These people are ten times more likely to be male than female, although female ones like Aileen Wuornos do exist. It is estimated that there could be anywhere from 25-50 of these people active in the United States at any given time. Some famous examples of these people are Ed Gein, Ted Bundy, and the Zodiac. For ten points, name this type of criminal, who commits three or more murders with a cooling-off period between each one.
first_sentence: One database that tracks these people categorizes them as “missionaries” or “bluebeards,” among others.