Jeffrey Lionel Dahmer, also known as the Milwaukee Cannibal or the Milwaukee Monster, was an American serial killer and sex offender who killed and dismembered seventeen males between 1978 and 1991. Many of his later murders involved necrophilia, cannibalism, and the permanent preservation of body parts—typically all or part of the skeleton.
Dahmer's 1991 mugshot
Dahmer, pictured in the 1978 Revere High School yearbook, Reverie
Dahmer, pictured in West Germany in 1979. His off-duty drinking caused him to be deemed unsuitable for military service in 1981.
An illustration provided by Dahmer depicting the private altar he had been planning to create at the time of his July 1991 arrest
A serial killer is a person who murders three or more people, with the killings taking place over a significant period of time between them. The serial killers' 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 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. The FBI will focus on particular patterns that the serial killers follow throughout their murders. They will then use on the patterns they find for key clues into finding the killer along with their motives. 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.
An 1829 illustration of Irish serial killer William Burke murdering Margery Campbell
Juhani Aataminpoika, a Finnish serial killer also known as "Kerpeikkari" (which means 'executioner'), was one of the most active serial killers of the 19th century, killing as many as 12 people in 1849 within five weeks before being caught.
The 'Nemesis of Neglect': Jack the Ripper depicted as a phantom stalking Whitechapel, and as an embodiment of social neglect, in a Punch cartoon of 1888
Mug shot of serial killer, cannibal and necrophile Ottis Toole