Unidentified Wiki

Mary Katherine Williams (February 4, 1961 - c. October 2, 1992) was a woman who was killed by serial killer Joel Rifkin in 1992.

She was identified by dental records the following year. She had been reported missing after she never arrived to visit her family for Christmas.

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  • The case was discussed in the 2023 two-part series Cold Case Files: The Rifkin Murders.

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