Here's a summary:
* The Case: A young woman, Miss Violet Hunter, seeks Holmes' help. She's employed as a governess by the eccentric Mr. Rucastle at the Copper Beeches, his isolated country home. Miss Hunter is increasingly uneasy about her employer and his strange behavior.
* Suspicions: Holmes and Watson travel to the Copper Beeches and observe the unusual routines and strict rules imposed on Miss Hunter. They also discover a secret passage in the house and a strange symbol carved on the wall.
* Investigation: Holmes, disguised as a gardener, gains access to the house and learns more about Rucastle's past. He uncovers a hidden history of violence and deceit, including the disappearance of Rucastle's previous governess.
* The Truth: Holmes discovers that Rucastle is holding his daughter, Alice, captive within the house. He uses his deduction skills to find a way to help Alice escape and expose Rucastle's crimes.
* Resolution: Rucastle is arrested, Alice is rescued, and Miss Hunter is free from her unsettling employment. The case highlights Holmes's brilliance in observing details, unraveling complex situations, and achieving a just outcome.
Key Themes:
* Control and manipulation: Rucastle's domineering and controlling behavior towards the women in his life is a major theme.
* The power of observation: Holmes's ability to see beyond superficial appearances and notice subtle clues is crucial to solving the case.
* Justice and retribution: The story emphasizes the need for justice and the consequences of criminal actions.