Sheryl Lynn Bonaventura was 18 when she went missing from Grand Junction, Colorado. She was last seen at a local shopping mall on March 29, 1984, and witnesses later placed her with Christopher Wilder at a diner in Silverton and at the Four Corners Monument. Wilder checked into a Page, Arizona, motel with her on March 30 and was alone in a Las Vegas motel on March 31.

On May 3, 1984, picnickers found Bonaventura’s nude body in a remote desert area near U.S. Highway 89, about 12 miles east of Kanab, Utah. Dental records identified her; an autopsy reported multiple stab wounds to the chest and a single gunshot wound, with death estimated around March 31. Christopher Wilder, who was on the FBI Ten Most Wanted list and later died on April 13, 1984, during a struggle with police in New Hampshire, is the sole suspect linked to her murder. No arrests were made.

Did anyone in the community have contact with Sheryl or see her with Wilder in late March 1984?