A serial killer is a person who murders three or more people, with the killings taking place over a significant period of time in separate events. Their psychological gratification is the motivation for the killings, and many serial murders involve sexual contact with the victims at different points during the murder process. The United States Federal Bureau of Investigation (FBI) states that the motives of serial killers can include anger, thrill-seeking, financial gain, and attention seeking, and killings may be executed as such. The victims tend to have things in common, such as demographic profile, appearance, gender, or race. As a group, serial killers suffer from a variety of personality disorders. Most are often not adjudicated as insane under the law. Although a serial killer is a distinct classification that differs from that of a mass murderer, spree killer, or contract killer, there are overlaps between them.
A spree killer is someone who commits a criminal act that involves two or more murders in a short time, often in multiple locations. There are different opinions about what durations of time a killing spree may take place in. The United States Bureau of Justice Statistics has spoken of "almost no time break between murders", but some academics consider that a killing spree may last weeks or months, e.g. the case of Andrew Cunanan, who murdered five people over three months.
Dennis Lynn Rader, also known as BTK, is an American serial killer who murdered at least ten people in Wichita and Park City, Kansas, between 1974 and 1991. Although Rader occasionally killed or attempted to kill men and children, he typically targeted women. His victims were often bound, sometimes with objects from their homes, and either suffocated with a plastic bag or manually strangled with a ligature.
The National Center for the Analysis of Violent Crime (NCAVC) is a specialist FBI department. The NCAVC's role is to coordinate investigative and operational support functions, criminological research, and training in order to provide assistance to federal, state, local, and foreign law enforcement agencies investigating unusual or repetitive violent crimes.
Edmund Emil Kemper III is an American serial killer convicted of murdering seven women and one girl, between May 1972 and April 1973. Years earlier, at the age of 15, Kemper had murdered his paternal grandparents. Kemper was nicknamed the "Co-ed Killer", as most of his non-familial victims were female college students hitchhiking in the vicinity of Santa Cruz County, California. Most of his murders included necrophilia, decapitation, and dismemberment.
Robert Kenneth Ressler was an American FBI agent and author. He played a significant role in the psychological profiling of violent offenders in the 1970s and is often credited with coining the term "serial killer", though the term is a direct translation of the German term Serienmörder coined in 1930 by Berlin investigator Ernst Gennat. After retiring from the FBI, he authored a number of books on serial murders, and often gave lectures on criminology.
My Life Among the Serial Killers: Inside the Minds of the World's Most Notorious Murderers is a book written by Helen Morrison and Harold Goldberg. It presents the cases of ten serial killers, and touches on many more. Morrison spent hundreds of hours in face-to-face interviews, over many years, with several of the subjects. She uses the individual stories to explain and put forth her ideas on what makes a serial killer. The book has received criticism for being factually inaccurate on several topics.
In criminology, a disorganized offender is a type of serial killer classified by unorganized and spontaneous acts of violence. The distinction between "organized" and "disorganized" offenders was drawn by the American criminologist John Douglas and Roy Hazelwood. These profiles were also studied and modified in the FBI's Behavioral Science Unit located in Quantico, Virginia. By classifying these offenders into different categories, the FBI is able to track down offenders by studying their behavior and habits.
Kristen Heather Gilbert is an American serial killer and former nurse who was convicted of four murders and two attempted murders of patients admitted to the Veterans Affairs Medical Center (VAMC) in Northampton, Massachusetts. She induced cardiac arrest in patients by injecting their intravenous therapy bags with lethal doses of epinephrine, commonly known as adrenaline, which is an untraceable heart stimulant. She would then respond to the coded emergency, often resuscitating the patients herself. Prosecutors said Gilbert was on duty for about half of the 350 deaths that occurred at the hospital from when she started working there in 1989, and that the odds of this merely being a coincidence was 1 in 100 million. However, her only confirmed victims were Stanley Jagodowski, Henry Hudon, Kenneth Cutting, and Edward Skwira.
John Edward Douglas is an American retired special agent and unit chief in the United States Federal Bureau of Investigation (FBI).
John Joseph Joubert IV was an American serial killer executed in Nebraska. He was convicted of murdering three boys: one in Maine, and two in Nebraska.
The FBI method of profiling is a system created by the Federal Bureau of Investigation (FBI) used to detect and classify the major personality and behavioral characteristics of an individual based upon analysis of the crime or crimes the person committed.
Rape trauma syndrome (RTS) is the psychological trauma experienced by a rape survivor that includes disruptions to normal physical, emotional, cognitive, and interpersonal behavior. The theory was first described by nurse Ann Wolbert Burgess and sociologist Lynda Lytle Holmstrom in 1974.
The Behavioral Science Unit (BSU) is the original name of a unit within the Federal Bureau of Investigation's (FBI) Training Division at Quantico, Virginia, formed in response to the rise of sexual assault and homicide in the 1970s. The unit was usurped by the Critical Incident Response Group (CIRG) and renamed the Behavioral Research and Instruction Unit (BRIU) and currently is called the Behavioral Analysis Unit (5) (BAU-5) within the National Center for Analysis of Violent Crime (NCAVC). The BAU-5 currently works on developing research and then using the evidence-based results to provide training and improve consultation in the behavioral sciences—understanding who criminals are, how they think, why they do what they do—for the FBI and law enforcement communities.
The Macdonald triad is a set of three factors, the presence of any two of which are considered to be predictive of, or associated with, violent tendencies, particularly with relation to serial offenses. The triad was first proposed by psychiatrist J. M. Macdonald in "The Threat to Kill", a 1963 article in the American Journal of Psychiatry. Small-scale studies conducted by psychiatrists Daniel Hellman and Nathan Blackman, and then FBI agents John E. Douglas and Robert K. Ressler along with Ann Burgess, claimed substantial evidence for the association of these childhood patterns with later predatory behavior. Although it remains an influential and widely taught hypothesis, subsequent research has generally not validated this line of thinking.
Forensic nursing is the application of the forensic aspects of healthcare combined with the bio/psycho/social/spiritual education of the registered nurse in the scientific investigation and treatment of trauma and/or death of victims and perpetrators of violence, criminal activity, and traumatic accidents In short, forensic nursing is the care of patients intersecting with the legal system.
Israel Keyes was an American serial killer, bank robber, burglar, arsonist, kidnapper, and sex offender. He murdered at least three people and committed dozens of other crimes across the United States from the late 1990s to February 2012. Keyes was arrested in March 2012 and killed himself while awaiting trial. Evidence in his jail cell led the Federal Bureau of Investigation (FBI) to suspect that Keyes murdered eleven people.
Mindhunter is an American psychological crime thriller television series created by Joe Penhall, based on the 1995 true-crime book Mindhunter: Inside the FBI's Elite Serial Crime Unit by John E. Douglas and Mark Olshaker. The series debuted in 2017 and ran for two seasons. Executive producers included Penhall, Charlize Theron, and David Fincher, the latter of whom served as the series' most frequent director and de facto showrunner, overseeing many of the scriptwriting and production processes. The series stars Jonathan Groff, Holt McCallany, and Anna Torv, and follows the founding of the Behavioral Science Unit in the Federal Bureau of Investigation (FBI) in the late 1970s and the beginning of criminal profiling.
Elizabeth Tracy Mae "Bethe" Wettlaufer is a convicted Canadian serial killer and former registered nurse who confessed to murdering eight senior citizens and attempting to murder six others in southwestern Ontario between 2007 and 2016. With a total of 14 victims either killed or injured by her actions, she is described as one of the worst serial killers in Canadian history.
Jon Barry Simonis, also known as the Ski Mask Rapist, is an American serial rapist who committed crimes in 12 states between 1979 and 1981. He confessed to at least 81 attacks and was sentenced to 21 life terms with an additional 2,690 years in prison. Investigators believe they could connect him to 130 attacks across the country.
