While everyone knows names like John Wayne Gacy and Ted Bundy, have you ever wondered about international serial killers? As they're lesser known killers in the United States, you've probably never heard of the Spanish serial killers listed below, although their crimes often matched the brutality of American murderers. Famous in their home countries - or, if you prefer, infamous - these serial killers captured the public's attention. Like all mass murderers, serial killers from Spain transfix and terrify people as they illustrate the profound human capability for cruelty.

Notable Spanish serial killers often did more than merely murder their victims. The men and women below were known for their bizarre mutilation of corpses, chilling motivations, and other disturbing traits. If you're interested in the history of murder in Spain, read over this list.