Murder has existed since the Biblical days when Cain killed Abel and has fascinated man ever since. It has been committed for material gain, money, power, gratification, and/or revenge. In 2011, according to data from the FBI, an estimated 14,612 people were murdered in the United States, which averages out at just over forty per day; one of the highest murder rates of any country on Earth. The United States also holds the dubious honor of having more serial killers than any other country. Serial killings, or multiple murders, are not a new phenomenon. They have been going on for centuries around the world. The only thing that is new is the term "serial killer." which was first used about twenty years ago to describe these multiple murderers. A former chief of the FBI's Elite Serial Crime Unit, John Douglas has been reported as saying that, "A very conservative estimate is that there are between thirty-five and fifty active serial killers in the United States at any given time." Normally, when one thinks of serial killers, it is a male that comes to mind such as Ted Bundy, Jeffrey Dahmer, Albert DeSalvo, or John Wayne Gacy. However, women have been multiple killers since early times: think Aileen Wuornos, a real femme fatale. Women serial killers are no way as numerous in number as their male counterparts, but it has been estimated that one of every six serial killers in the US today (that is 8%) of all American serial killers is a woman. American women account for 76% of all female serial killers worldwide. John Douglas, a former FBI profiler, was reported as saying that, "A serial killer's greatest defense is that he/she is virtually unrecognizable by sight. The general public thinks (they look) like Hannibal Lecter, but they actually look like you and I, like the delivery person, the postman, who comes to your door." Dr. Helen Morrison, a forensic psychiatrist has said, "One of the things is you cannot spot a serial killer by what they show you........ Serial killers can be very charismatic and charming. They are not the psychopath running down the street; they are the man/woman next door. They're so completely ordinary, and that is what gets a lot of victims into trouble." In this book author Sylvia Perrini examines the profiles of thirty American women serialkillers. Welcome to "SHE DEVILS OF THE USA: "