"The Resident Patient" is a short story by Arthur Conan Doyle featuring the famous detective Sherlock Holmes. The narrative revolves around a young doctor, Dr. Percy Trevelyan, who becomes the resident physician for a wealthy patient, Mr. Blessington. The story explores themes of trust and deception as Trevelyan finds himself entangled in a mysterious situation involving his patient. As the plot unfolds, Holmes and his companion, Dr. John Watson, investigate the circumstances surrounding Blessington's illness and the strange occurrences in his life. The story highlights Holmes's keen observational skills and deductive reasoning, ultimately leading to a surprising resolution.