Utah killer volunteered to have his heart monitored during 1938 execution

John Deering was a lowlife, a self-described misfit who casually said, “I’m no good,” as he confessed to a senseless 1938 murder in Salt Lake City. He’s remembered to this day for a very strange reason. Deering, 39, volunteered to be a guinea pig in a scientific experiment in which a doctor probed the …