Sylvia Edwina Waite Gray, a 76-year-old White woman, was reported missing from Plainfield, New Hampshire on May 28, 1982. Her body was found two days later, on May 30, 1982, in woods near her home on Daniels Road. An autopsy found she had been beaten and stabbed, and a ring she usually wore was missing.

Investigators publicly identified no suspects and there were no arrests. The case grew cold, and in 2012 the New Hampshire Cold Case Unit reopened aspects of the investigation, re-interviewing people and re-examining evidence. Authorities have considered whether her death might be connected to other unsolved Connecticut River Valley homicides from that era, but no definitive link has been reported.

Anyone who knew Sylvia, lived in Plainfield in 1982, or has information about missing jewelry or suspicious activity near Daniels Road is asked to come forward.