Margaret Barbera, 38, was an accountant and former comptroller for Candor Diamond Corporation who became a cooperating witness as federal investigators probed the company’s collapse and suspected fraud. Through her attorney she asked for police protection, saying her cooperation placed her at risk, but the request was refused.

On the evening of April 12, 1982, Barbera walked toward the rooftop parking area at Pier 92 on Manhattan’s West Side to reach her car. Witnesses saw a man in a ski mask dragging a woman’s limp body toward a van; three CBS employees—Leo Kuranuki, Robert Schulze, and Edward Benford—attempted to intervene and were each shot once in the head during the struggle. Barbera’s body was found dumped elsewhere in Manhattan the next morning, killed by a single shot to the back of the head. Early reports cited a .22-caliber weapon and raised the possibility of organized-crime involvement.

Investigators connected Barbera’s killing to the disappearance of Candor employee Jenny Soo Chin and to the fraud probe. Attention focused on a man using the name Donald Bowers or Donald Nash; he was arrested in Kentucky days later and later prosecuted in New York. The case also reached Candor’s president, Irwin Margolies, who was accused of arranging the murders.

Did anyone who knew Barbera at Candor or saw activity at Pier 92 that night come forward with information?