Patrick J. Cassidy, 26, was shot and killed in the early morning hours of December 14, 1994, in the William Penn Housing Project in Chester, Pennsylvania.

Police arrested Rodney Derrickson after residents identified him as the man who approached Cassidy. Witnesses included Mark Harris, who said he was sitting on his front steps, and Harris’s father Jackie Sr., who said he saw the events from his living room window; both reportedly identified Derrickson and described him taking the keys from the ignition before the shooting. Derrickson’s mother and uncle gave him an alibi, saying he was at home asleep, and some allegations arose that the car keys disappeared before the first court hearing, that a ballistics report showed no evidence of a close-range shot, and that eyewitness statements may have been coerced.

Rodney Derrickson was held responsible for Cassidy’s death based on the evidence presented at the time. Does anyone have additional information about the case, the witnesses, or the missing keys?