Thomas Warren Whisenhant (January 29, 1947 – May 27, 2010) was an American serial killer who murdered at least four women between 1963 and 1976 in Mobile County, Alabama. After being arrested for the October 1976 murder of Cheryl Payton, Whisenhant confessed to killing three other women. He was sentenced to death in Alabama in September 1977, and was executed in May 2010 at Holman Correctional Facility via lethal injection. At the time of his execution, Whisenhant was Alabama's longest serving death row inmate, spending thirty-two years, eight months, and twenty days on death row.