Kathy Graves was a 15-year-old girl of European descent who was murdered in South Lake Tahoe in 1989. Hikers near the Mt. Tallac trailhead at Camp Concord found a human skull; additional bone fragments were later recovered there. Forensic analysis estimated the remains had been at the site between six months and two years before discovery, and a forensic anthropologist identified the bones as belonging to a teenage girl and said all damage to the bones occurred after death, likely from scavengers.

Kathy’s home life was troubled. Her father, Barry Graves, is described as neglectful and abusive; her aunt Sherry Parsley and her husband Ivan had offered to adopt her but Barry refused. Kathy often stayed with her aunt and uncle and called them multiple times a day. In summer 1989 she disappeared and, after weeks of silence, her family compelled Barry to report her missing.

The primary suspect named in the case is Joseph Michael Nissensohn, a convicted murderer. His wife, Cheryl Rose, testified that while in South Lake Tahoe they picked up Kathy, that Nissensohn took her into a secluded wooded area carrying a blanket and returned alone minutes later upset, and later told Rose that what happened with Kathy was messy. Nissensohn was charged in 2008 in this case as part of a larger investigation that included other killings. Does anyone have information about Kathy’s movements that summer or saw her near Mt. Tallac trailhead?