Elizabeth Ann ’Liz’ Stanisci Gibson was a 29-year-old woman from Rochester, New York, who disappeared on November 25, 1989. Two days later a hunter found her body in a swampy area in a neighboring county; she had been strangled and left in the cold mud.

A witness, Jo Ann Van Nostrand, told police she had seen a man the women called Mitch with Liz shortly before the body was discovered. Van Nostrand did not know his real name or workplace but described how he operated and the kind of car he drove, details investigators considered important amid a series of killings shaking the area.

Investigators came to believe a serial killer was responsible as the murders continued. Arthur Shawcross, later known as the Genesee River Killer, was arrested in early January 1990 and convicted in December 1990 on ten Monroe County murder charges. About three months after those convictions, Shawcross pleaded guilty to strangling Elizabeth Gibson and received an additional life sentence for her murder.

Please share any information that might help fill gaps in her case.