Leslie Allen Williams was born on July 4, 1953, in Detroit, Michigan. His early life was difficult as his mother neglected him. Because of this neglect, he was sent to live with his grandparents, who raised him.

At the age of 17, in 1970, he had his first encounter with the law when he was arrested for breaking into a home in his neighborhood. He was sentenced to serve a year in prison. After his release, he continued to get into trouble with the law over the next twelve years. His arrests involved crimes that became more serious as time went on.

In September 1983, Williams was arrested for a much graver offense. He sexually assaulted a woman in her home and was sentenced to 20 years in prison for this crime. After serving about eight years, he was granted parole in 1990.

In 1990, Leslie Allen Williams was released on parole after serving eight years for a previous crime. Nine months later, on September 14, 1991, he killed his first victim, 18-year-old Kami Villanueva, in her home in Oakland County. He attacked her, raped her, and then killed her. Afterward, he buried her body in a shallow grave.

On September 29, 1991, Williams targeted two sisters, 14-year-old Melissa Urbin and 16-year-old Michelle Urbin. The sisters were walking out at night when Williams attacked them. Like Kami, he raped and killed both sisters. He placed their bodies in his car and drove to a secluded area. There, he dug two shallow graves for them. Before burying the sisters, Williams also violated their bodies.

Five months later, on January 4, 1992, he murdered his fourth victim, 15-year-old Cynthia Marie Jones. After attacking her in a similar manner, Williams buried her body in a shallow grave as well.

On May 24, 1992, Williams attempted to rape another woman after dragging her into his car at a cemetery. Witnesses saw this happen and called the police. He was arrested and later confessed to the four murders. Over the following weeks, he guided police to the locations of his victims' graves. As a result of his actions, there were significant questions about the Michigan parole system, especially from the families of the Urbin sisters.

In 1992, Williams was sentenced to life in prison without the possibility of parole for the four murders and the attempted rape. He is still serving his sentence at the Carson City Correctional Facility.