The distraught head of an elite boarding school hires Holmes and Watson to investigate the sensitive disappearance of the young heir of a local nobleman. Searching in the fields surrounding the school, they make a grisly discoveryâthe dead body of one of the boyâs teachers. Sensing the growing danger to the young boy and suspecting the interference of the Dukeâs secretary, Holmes and Watson question the Duke himself, who reveals a shocking detail to them.