AnailingSherlockHolmestravelsunderdoctorsorderstoCornwallforaperiodofrestandconvalescence.Dr.WatsonaccompanieshimintentonensuringhisfriendfollowsordersbuttheyaresoonapproachedbytheReverendRoundhaytohelpsolveamostperplexingincident.Ayoungwoman’BrendaTregennis’apparentlydiedofapoplexywhileplayingcardswithhertwobrothers’G...