On April 30, 1979, Carl Gaimari, a wealthy commodities trader from Chicago, was shot and killed in his home while his wife and young children were locked in a closet.

Two weeks later, Arthur Jones, Gaimari's friend and fellow trader on the Chicago Board of Trade, told his wife he had a business meeting, walked out of his suburban Chicago home, drove off in his silver Buick and vanished without a trace.