Attorneys for a Tennessee death row prisoner were trying to spare him from lethal injection and they succeeded — but not the way they hoped. Instead of getting the needle, Edmund Zagorski is scheduled to die in the electric chair on Nov. 1. If the execution goes forward, he will be only the second person to be executed that way in Tennessee since 1960. His case illustrates how hard it is for states to find ways to execute prisoners that courts will deem humane; the challenge attorneys face trying to save their clients from execution; and the frustration of some...