David Allen Lucas (born 1956) is an American serial killer who committed between three and six murders in San Diego County, California from 1979 to 1984. Due to the fact that all the victims had their throats slashed, the case was dubbed The Throat-Slash Murders. After one of the most prolonged trials in the city's history, Lucas was found guilty of three of the murders and sentenced to death, and remains on death row.

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