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251 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

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Keith “Cos” Williams was a 30-year-old Black/African American male from Chester, Pennsylvania, whose life ended in gun violence on November 18, 1997. Online records identify him by the nickname “Cos” and place his death in Chester, where the killing later became the focus of a murder prosecution in Delaware County.

The case centered on James Curtis Campbell, who was 19 and from Chester when he was charged with first-degree murder in Williams' shooting death. At trial in February 1 ...Read More

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Victim Details

Keith Cos Williams

Male

Black / African American

Chester

PA

1997-11-18

30

Keith

Cos Williams

05/18/2026