The Adventure of the Dying Detective by Arthur Conan Doyle

Holmes appears gravely ill and refuses even Watson’s help—until he summons a suspicious doctor known for his exotic disease knowledge. In truth, Holmes is faking his illness to trap the doctor, who attempted murder to protect a secret inheritance. The plot is tightly confined to a single room but brims with psychological drama. Holmes’s theatrical deception serves justice. It’s a brilliant showcase of Holmes’s intellect, even in apparent weakness.