Just hours after Holmes and Russell return from solving the murky riddle of The Moor, a bloodied but oddly familiar stranger pounds desperately on their front door, pleads for their help, and then collapses. When he recovers, he lays before them the story of the enigmatic Marsh Hughenfort, younger brother of the Duke of Beauville, returned to England upon his brother’s death.Not until Holmes and Russell arrive in the village of Arley Holt can they fully understand Marsh’s dilemma.