Sherlock Holmes (1984)

S2E4 The Resident Patient

Dr. Trevelyan seeks Holmes's assistance regarding his friend Blessington, who is troubled by the mysterious disappearance of a Russian father and son during a medical appointment. Although Blessington believes he has no enemies, he is discovered hanged the following day. Holmes, with input from Watson, delves into the case to uncover the truth behind these unsettling events.