Christopher Schoenborn, 20, and his cousin Dennis Patrick Alt, 24, were last seen together at the Amway Grand Plaza Hotel in Grand Rapids on December 7, 1982, after attending a horticulture show. Witnesses later remembered the cousins speaking with a man named Randy Kraft in the hotel lobby that evening. Two days later their frozen bodies were found in an open field near a water tank in Plainfield Township; both had been strangled and Schoenborn was found partially clothed.

Months after the murders, investigators searching Randy Kraft’s Long Beach vehicle and home recovered personal items belonging to many victims, including Schoenborn’s tan and maroon ski jacket and his black work boots. Authorities also located a coded list believed to be a victim scorecard that investigators think referenced Schoenborn and Alt. Kraft was convicted in California in 1989 for multiple murders and sentenced to death; he was not tried in Michigan.

Are there anyone who knew Christopher or Dennis, or remembers them at the horticulture show, who can share details about their movements that weekend?