Arthur John Shawcross (June 6, 1945 – November 10, 2008), also known as the Genesee River Killer, was an American serial killer active in Rochester, New York.
His first known murders were in 1972 when he killed a young boy and girl in his hometown of Watertown, New York.
Under the terms of a plea bargain, Shawcross was allowed to plead guilty to one charge of manslaughter, for which he served 14 years of a 25-year sentence.
He killed most of his victims in 1988 and 1989 after being paroled early which led to criticism of the justice system.
A food service worker, Shawcross trawled the streets of Rochester in his girlfriend's 1984 sky blue Dodge Omni (later using her blue-grey 1987 Chevy Celebrity), looking for sex workers to abduct.
He died in Albany, New York in 2008, while serving a prison sentence of 250 years for his crimes.
Dr.
Michael H.
Stone, professor of psychiatry at Columbia University, and an authority on violent behavior, identified Shawcross as "one of the most egregious examples of the unwarranted release of a prisoner" in his book, The Anatomy of Evil.