HENRY SPEARMAN had returned to his room following the confrontation with the Clarks. He relaxed somewhat, since an intellectual puzzle had fallen into place. The actions of the Clarks when confronted with the package were consistent with an earlier hypothesis he had formulated about them, and that fact cheered him considerably. He decided that he wanted to enjoy the afternoon air after experiencing what he considered to be a minor triumph. But there were still matters that weighed on his mind, and he was now encouraged to go on pushing his economics into criminology. Spearman took his folded list from the desk drawer and, putting a pencil in his pocket, exited the room. He began to stroll on the hotel grounds away from the beach. At first his wandering showed no particular intent. The professor was more concerned with turning certain facts over and over in his mind. He was persuaded, of course, that he had discovered the killers of General Decker and was now emboldened to think that by a similar process he might determine the killer of Justice Foote.
What did he know about the case? At first he had thought there must be a link between the two killings. Simple probability had made that seem likely. Now he