In "The Adventure of the Copper Beeches", Sherlock Holmes is hired by Violet Hunter, a governess offered a suspiciously high-paying job under bizarre conditions at a country estate. Holmes uncovers a sinister scheme involving the family, a hidden captive, and a twisted plot to control an inheritance. With his keen deductive skills, Holmes helps Violet navigate the danger and expose the truth behind the eerie Copper Beeches estate.