Holmes’s loyal companion and the story's narrator.
The narrative follows Dr. Percy Trevelyan, a talented but penniless physician who enters into a singular business arrangement with a mysterious benefactor named Mr. Blessington. Blessington funds a prestigious practice for Trevelyan in exchange for a large share of the profits and a room in the house as a "resident patient". The case shifts from a medical curiosity to a capital crime when Blessington is found dead under suspicious circumstances, eventually revealed by Holmes as a calculated act of revenge. The Resident Patient
The consulting detective who unmasks the deception behind a staged suicide. Holmes’s loyal companion and the story's narrator
Two men posing as a Russian Count (suffering from catalepsy) and his son visit the doctor. While the son "waits," he explores Blessington’s private rooms upstairs. Blessington
The "resident patient" and former member of the Worthingdon Bank Gang who lives in terror of his former associates.
After years of stability, Blessington becomes a nervous wreck upon reading news of the early release of his former gang associates.
Holmes dismisses the suicide theory after examining the scene, noting that the cigars found in the room and the complexity of the hanging required multiple participants. He deduces the following: