Jeffrey Lionel Dahmer (May 21, 1960 November 28, 1994) was an American serial killer and sex offender. Dahmer murdered 17 men and boys between 1978 and 1991, with the majority of the murders occurring between 1987 and 1991. His murders involved rape, dismemberment, necrophilia and cannibalism. On November 28, 1994, he was beaten to death by an inmate at the Columbia Correctional Institution, where he had been incarcerated. Dahmer was born in West Allis, Wisconsin, the son of Joyce Annette (ne Flint) and Lionel Herbert Dahmer, an analytical chemist. Seven years later, his brother David was born. Joyce Dahmer reportedly had a difficult pregnancy with her elder son. When Jeffrey was eight years old, he moved with his family to Bath, Ohio. Dahmer grew increasingly withdrawn and uncommunicative between the ages of 10 and 15, showing little interest in any hobbies or social interactions.
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