Dr. Thorndyke is called in by a life insurance company to investigate another case. There was apparently no doubt that Thomas Elton, a friendless, poverty-stricken artist, had fallen from the top of the overhanging cliff onto the beach. Now, one would suppose with the evidence of this fall of about a hundred and fifty feet, the smashed face and broken neck, there was not much room for doubt as to the cause of death. But Thorndyke indeed has his doubts.